Homebrew RF Circuit Design Ideas

Homebrew RF Circuit Design Ideas

"There is no such thing as a new idea.

It is impossible.

We simply take a lot of old ideas and put them into a sort of mental kaleidoscope.

We give them a turn and they make new and curious combinations." - Mark Twain (1835-1910)

Razecus.go.ro

- Transceivers
- Receivers
- Transmitters and Beacons
- Transverters and Converters
- RF Power Amplifiers
- Low Noise Amplifiers
- Oscillators
- RF Signal Sources and Multipliers
- VFO Stabilizers / PLL
- Antenna Tuners / Analyzers
- ATV Transmitters/Modulators
- RF Switch / Attenuators
- RF Mixers
- AGC Circuits
- Phase-Shifters
- Filters
- RF Test Circuits
- Baluns / Transformers
- L/C Meters
- Splitters / Dividers / Combiners / Isolators
- Prescalers

- RF Power and Field Meters
- Couplers
- Return Loss and SWR Meters

- Modulators
- Demodulators / Detectors
- Dip Meters
- Signal Generators
- Spectrum Analyzers
- Noise Generators
- Noise Blanker and Canceller
- Power Supply
- Audio Circuits
- Electronic CW Keyers
- CAT Interfaces
- Microwave and Microstrip Circuits
- Microwave Antennas
- Microstrip Junctions, Bends, Transitions
- Microstrip Filters
- Metal and Proximity Detectors

- Miscellaneous Circuits

Transceivers	Receivers
80m 5W CW Transceiver 7 MHz QRP Transceiver - DL5NEG 27 MHz R/C Transceiver 49 MHz Walkie-Talkie 432 MHz Data Transceiver QRP SSB Transceiver QRP Transceiver 40m/20m - IK3OIL Short Range Wireless Data Communication Transceiver QRP 20m SSB HF Transceiver CW SSB NorCalSierra Transceiver QRP 40m - F6BQU Transceiver SSB with 9MHz-IF 20m Transceiver BITX - VU2ESE 40m - 20m Dual-band Transceiver - VU2ESE 10 GHz I/Q Transceiver - S53MV 7 MHz Transceiver - DK6SX MIZUHO MX21S QRP Transceiver HF SSB QRP Transceiver - YD1JJJ 40m CW QRP Transceiver - NT7S Long Range FM Cordless Telephone 3.5 MHz 5W CW Transceiver - JF1OZL 14 MHz 10W SSB Transceiver - JF1OZL 21 MHz QRP SSB Transceiver - JF1OZL 40m SSB Transceiver Santerre - F6FEO 10MHz 1W Transceiver NE-QRP 20m CW Transceiver - 7N3WVM 20m QRP Transceiver - PA2OHH 40m SSB Transceiver PQDS - XQ5FOD 40m CW Transceiver - JG1EAD 20m SSB Transceiver - Taurus - SP5DDJ 80m CW Transceiver - Aquarius - SP5DDJ VHF FM Transceiver - DF5FC 10m Transceiver MiniPIG - W8DIZ 80m CW Transceiver - Libra - SP5DDJ 30m CW Transceiver - 7N3WVM 50 MHz SSB/CW Transceiver - 7N3WVM 160m SSB Transceiver - G3TSO 20m CW Transceiver - K8IQY 30m PSK31 Transceiver - NN1G 30m CW Transceiver - K1SWL 40m CW Transceiver - K8IQY 50 MHz SSB Transceiver - KD1JV 75m QRP SSB Transceiver - WA7JHZ 80m All-BC547 SSB Transceiver - VK3AJG PSK31 Transceiver - KD1JV CB AM Receiver-Transmitter 10 MHz QRP Transceiver - PA2OHH 40m CW Transceiver - PY2MG 40m CW/DSB Transceiver - PY2MG 40m SSB Transceiver - PY2MG 80m Unichip Transceiver - G0UPL HF Dual-Conversion Transceiver - YO3DAC/YO3BAL 20m CW Transceiver Norcal 30m CW Transceiver Norcal 40m CW Transceiver Norcal 20m or 30m Image-Rejection Transceiver Norcal-2030 10m CW Transceiver K8IQY 75m DSB Transceiver - KE7HR 14 MHz PSK31 Transceiver - K1SWL 80m DSB Transceiver - PA3ANG 430 MHz SSB Transceiver - JF1OZL 27 MHz Walkie-Talkie 40m-20m CW Transceiver - LZ3AI 80m All-2N2222 CW Transceiver - OK2BEU 144 MHz QRP CW Transceiver 144 MHz Simple Walkie-Talkie 144 MHz AM Walkie-Talkie - YO3AVE 2m PLL FM Transceiver - DC1YB 20m CW Transceiver - DC1YB 144 MHz 2-channels Walkie-Talkie - DC1YB 7 MHz CW Transceiver - W7EL 20m Bell-Ringer CW Transceiver - AA1TJ 50 MHz FM Transceiver for Audio and Data 80m CW QRP Transceiver 10m SSB Transceiver 20m SSB 50W Transceiver - YO3AVE 10.1 MHz 2W Transceiver - DJ1ZB 15m QRP 1.5W Transceiver - W9SCH 20m 1.5V Low Supply Voltage Transceiver - DL2AVH 20m Superheterodyne Transceiver - NN1G 20m Two-Fer Transceiver - WU2J 30m "38-Special" Superhet Transceiver - AC6AN 40m 1.5W Rock-Steady Transceiver - K8IF 40m DB-25 QRP Transceiver - WA5JAY 40m "EverReady" Transceiver - WA6AHL 40m "Forty-9er" Transceiver - N6KR 40m Handbook Transceiver - WB6TMH 40m QRP Transceiver - N4HCJ 40m QRP Transceiver - W3TS 80m-40m-30m Superhet Transceiver - NN1G 80m CW-QSK Transceiver - NN1G 80m One-Transistor CW Transceiver - WB3EEL 80m SMD Transceiver - W1CFI HF QRP 1.5W Transceiver - KN1H HF "The-Phoenix" QRP Transceiver - W3TS 30m QRP Transceiver - K8IF 1.8 MHz QRP Transceiver - G3TXQ 80m/160m Transceiver - G4ENA 20m 5W SSB/CW Transceiver MFJ-9420 40m / 20m RockMite CW Transceiver - K1SWL 1.8MHz Transceiver - G3TXQ 20m Transceiver - G4ENA 27 MHz 3xBJT's Walkie-Talkie 27 MHz 4xBJT's Walkie-Talkie 27 MHz AM 6W Transceiver 27 MHz Saturn Walkie-Talkie 80m QRP Transceiver - YC3LSB 80m SSB Transceiver - YC3LSB 40m Mizuho DC7d CW Transceiver 40m Mizuho DC7x CW Transceiver 80m Transceiver MKARS - G6ALU 15m HiMite Transceiver - K1SWL 40m SSB Transceiver - JG1EAD 50 MHz AM Transceiver - JG1EAD 144 MHz FM Transceiver - JG1EAD 144 MHz SSB Transceiver - JG1EAD 430 MHz AM Transceiver - JG1EAD 14 MHz SSB/CW QRP Transceiver - W7ZOI 20m QRP SSB Transceiver - KD1JV 15m SSB Transceiver - WA4ZXF 80m Direct Conversion Transceiver - DK7JD 40m QRP KN-Q7 Transceiver - ZL2PD 80m ROSE-80 CW Transceiver - N1HFX 20m PSK-20 Transceiver - DL2FI 50 MHz Mini-Transceiver - JK1OLP 144 MHz DSB Transceiver - JH5TBS 2m Transceiver Front-End - DF5SL 40m CW SPATZ Transceiver - DK1HE 20m 3W Transceiver - S54S 50 MHz SSB/CW Transceiver - S54S 80m QRP CW/SSB Transceiver - S54S 80m QRP SSB Transceiver - SP5AHT 144 MHz FM Transceiver - DG0ZB 432 MHz Handheld Transceiver - DB1NV HF Mini-Transceiver JEDREK HF Transceiver SW Receiver - DK1HE/DL2FI IQ Transceiver with AD831 - DL7IY 9 MHz SSB Transceiver IF - DL6HA 144 MHz SSB-FM Transceiver - DC6HL 3.5 MHz and 14 MHz SSB 2W Transceiver - HA8RM 20m 4W QRP Transceiver HF SSB/CW Transceiver - DK3SP 40m ET-1 One-FET Transceiver - W2UW 40m SST-1 QRP Transceiver - W9ZTK 80m QRP Transceiver - K4DHC 14 MHz SDR QRP Transceiver - 4Z5KY 18 MHz I/Q Transceiver Phased Direct Conversion Transceiver 80m-40m-30m SP-5 QRP Transceiver - WA8TXT 20m QRP CW Transceiver - WB6NKJ 30m-40m QRP Transceiver - NZ5G 80m QRP Transceiver - G3IGU 10 GHz Transceiver - W1SNN 20m Superhet Transceiver - WB5IPM 80m-40m-30m SP-1 Transceiver - WA8TXT 80m-40m-30m SP-10 Transceiver - WA8TXT 50 MHz SSB Transceiver - JR1PWZ 30m QRP CW Transceiver - F6BQU 30m QRP Transceiver - KD1JV 40m QRP Transceiver - KD1JV 80m SSB-CW Transceiver - OH2BKU 80m QRP Transceiver - KD1JV 7 MHz TAK-40 Transceiver - WA2EUJ HF Transceiver - HA7SG 80m Wee-Willy DSB Transceiver - VE7GC SST QRP Transceiver - N6KR VHF SSB Transceiver - G4CLF 2m DSB Transceiver - PY2OHH 15m QRP CW Transceiver - PY2OHH 20m 9W SSB Transceiver - PY2OHH 40m 5W Transceiver - PY2OHH 40m 8W SSB Transceiver - Ararinha - PY2OHH 40m 8W SSB Transceiver - PY2OHH 40m 10W SSB Transceiver - PY2OHH 40m AM-SSB Dual-Conversion Receiver - PY2OHH 40m Smallest Transceiver - PY2OHH 40m SSB Transceiver - PY2OHH 40m TTL QRP Transceiver - PY2OHH 80m DSB-CW Transceiver - PY2OHH Tri-Band 4W CW Transceiver - PY2OHH 80m QRP Transceiver - OH7HJ Multiband BITX Transceiver - G6LBQ 80m SSB Transceiver - YO8CKU 7 MHz Hegau-SMD QRP Transceiver - DK1HE 7 MHz Miss-Moskita QRP Transceiver - DK1HE 40m CW-SSB Transceiver - KD1JV 40m SSB Transceiver - W6IBC Pixie2 Transceiver - W7AMX 36.1 MHz Wireless Encoded Transceiver 80m 5W CW Transceiver 7 MHz All-PNP CW Transceiver - JH5ESM 7 MHz CW Transceiver - JK1XKP 7 MHz Direct Conversion Transceiver - W7ZOI 7 MHz Ultra Portable QRP Transceiver - W7ZOI 80m QRP CW Transceiver - KL7IAK FOXX2 QRP Transceiver - G3RJV GQ-40 Transceiver - GW8ELR CB-band AM Transceiver 20m FDIM-2010 CW Transceiver - NT7S 40m QRP Transceiver - VU3PRX 6m-10m-20m 3xTransistors DSB Transceiver 27 MHz QRP FM Transceiver 144 MHz DSB Transceiver - VK3AJG 15m QRP CW Transceiver MFJ-9015 15m Tuthill QRP CW Transceiver 27 MHz Micro Transceiver 20m SSB Transceiver - W5BAA 2m Walkie-Talkie - W1DEJ 7 MHz QRP CW Transceiver - W7BBX 20m 1.5W QRP Transceiver - W7ZOI Multiband Rockmite CW Transceiver - W1REX 20m SSB Transceiver EMF500 40m 1W CW Transceiver - WB5DJE 40m Hybrid Transceiver - W6XM 80m CW QRP Transceiver - DG0SA 80m SSB Transceiver - K1BQT 20m 15W CW Transceiver - K1BQT 40m Direct Conversion Transceiver - WA3ENK 20m CW QRP Transceiver - K1BQT 40m 1W CW Transceiver - W6XM 20m ILER-20 SSB Transceiver - EA3GCY 40m ILER-40 SSB Transceiver - EA3GCY 30m 72-Part Challenge QRP Transceiver - KD1JV 40m 1.5W CW Transceiver - W1FB GNAT-40 One-Transistor CW Transceiver - N7ZWY 40m CW Transceiver 2N2222 - K8IQY 40m SMK2 QRP CW Transceiver - AD6A 40m Transceiver - KD1JV.gif 80m MKARS80 Transceiver HF QRP SSB Transceiver - VK2DOB 7 MHz Miss-Moskita QRP Transceiver vMOS - DK1HE 10 GHz Data Link Transceiver - N6GN 40m Micro40 DSB Transceiver - VK3YE 7 MHz QRP Transceiver NE612 - BD4IGH 23cm FM Transceiver - PA3FYM 40m ALBA-II SSB QRP Transceiver Capacitive Three-Point FM TX-RX HF SSB Transceiver VFO 80m-40m Kajman2 20W Transceiver - SQ7JHM 40m 5W Transceiver - JABURU 80m Mohair-One CW QRP Transceiver - OH7SV 80m SSB-CW QRP Transceiver - YU1FI 10m 1Watter Transceiver - W8DIZ 15m 1Watter Transceiver - W8DIZ 20m 1Watter Transceiver - W8DIZ 30m 1Watter Transceiver - W8DIZ 40m 1Watter Transceiver - W8DIZ 80m 1Watter Transceiver - W8DIZ 20m Handheld QRP Transceiver - DK7IH 40m Open-QRP Transceiver - K1EL 80m All-BC547 Transceiver - G4USP MultiBand HF Transceiver HMY2K8 - VU2HMY Spark Transmitter-Receiver 40m SSB-CW QRP Transceiver - KD1JV 80m SSB QRP Transceiver - KD1JV 2m SSB-CW Transceiver - YO3BAL,YO3AD,YO3CTW 6m AM Transceiver - G3XBM 80m XBM80-2 CW Transceiver - G3XBM Single JFET FM Transceiver - VK2ZAY 20m QRP CW Transceiver MFJ-9020 144 MHz FM Transceiver - F6FJH 40m SSB QRP Transceiver - G4BWE 40m QRP CW Transceiver - W3KET 7 MHz QRP CW Transceiver - G3RJV FM Mains Intercom - G4JET 40m QRP CW Transceiver Mavti-40 - K0JYD 3.5 MHz CW Microtransceiver 40m "The-Classie" Class-E Transceiver - VE3MKC 1.8 MHz SSB Transceiver - G3PCJ 20m Experimental QRP Transceiver - G4BWE 40m Ultimate KISS Transceiver - G3RJT 80m Full QSK CW Transceiver - G4ENA 160m Direction Finding RX-TX - G4ENA Multiband Phasing Transceiver - G3TDZ Spark Transmitter - Crystal Receiver - VE2CV Underground VLF Communicator - G4AEE 1.8 MHz SSB QRP Transceiver - G3TXQ 3 MHz - 5 MHz CW 4xBJT Transceiver - SM6DWO 20m 2W CW Transceiver - G4BWE HF 2W CW Transceiver - GM3OXX 10 MHz SSB RX-TX Module - G4GXO 20m CW Transceiver - G3OGQ 20 MHz - 3200 MHz Oscillator CFY30 2m 1W FM DRA818 Transceiver - DO6GM 30m, 40m CW Transceiver - NN1G 40m 6W VXO CW Transceiver - DC0DA 80m 5W CW Mini80 Transceiver - DC0DA 80m,40m,20m 1W VXO Transceiver - SV1ONW 27 MHz 4xBJT Walkie-Talkie 27 MHz RC RX-TX 40m FT8 Transceiver - BD6CR HF SSB6.1 Transceiver - YT2FSG 40m 5W Flying-Pig Transceiver - W8DIZ	3.5 MHz to 10 MHz Superheterodyne Receiver 7 MHz Direct Conversion Receiver 20m Direct Conversion Receiver 27 MHz R/C Receiver 80m/40m Direct Conversion Receiver 80m Superheterodyne Receiver Aircraft Receiver 118 MHz to 136 MHz AM Superheterodyne Receiver with NE612 Shortwave AM Receiver 2 Bands Shortwave AM Receiver HF Receiver SSB Superheterodyne Receiver HF SSB CW Superheterodyne 144 MHz SSB Receiver - W1VT Two-stages HF Regenerative Receiver 80m/40m IQ Receiver - AK4AA 40m Direct Conversion Receiver - VU2ESE 1.8 MHz to 14.5MHz Direct Conversion Receiver 432 MHz FM Receiver - DF2FQ HF Receiver - WN5Y 144 MHz FM Receiver FM Receiver for Airband 137 MHz 14.070 MHz PSK31 Receiver - DL6FAP 20m PSK31 Receiver - DG2SK Ten-Tec 1253 Shortwave Receiver Direct Conversion Receiver with MOSFETs HF Direct Conversion Receiver - VU2UPX HF Receiver with MC3362 - VU2UPX 40m Binaural I/Q Receiver - KK7B Two Regenerative Receivers 40m SOP Receiver - N2CX Clasic40 Receiver - KK7B Herring HF Receiver - WA1LNQ Receiver for DRM - Digital Radio Mondiale - DL5MGD Receiver for 80m and 20m - OK2UGS Weather Receiver 137 MHz - F6BQU 144 MHz FM Receiver - PU2XJE Simple VHF FM Receiver Regenerative FM Receiver 80m SSB Super-80 Receiver - VK3YE VHF Receiver PLL - DF1FO Superregenerative HF Receiver Superregenerative VHF Receiver Receiver HF/VHF-AM/FM/SSB Grundig YB400 30m "Dirty-Thirty" Receiver - VE7BPO FM Broadcast Receiver TDA7000 General Coverage AM Receiver - ON6MU Direct Conversion Receiver AM-Immune - KD1JV Short-Wave AM Receiver - KD1JV 3x2N2222 Short-Wave AM Receiver 40m 3xFET Direct Conversion Receiver 40m Software Defined Radio - PY2MG 80m Direct Conversion Receiver - PA2OHH HF AM/SSB Receiver - PY2MG Short-Wave Regenerative Receiver - PA2OHH VHF FM Receiver - PY2MG CB Receiver TCA440 20m SSB Receiver 118 MHz to 136 MHz Aviation Band Receiver Superregenerative RX for 144-432-1296 MHz - F9HX FM Receiver with Strength-meter Economy Short-Wave Receiver 2m AM Receiver 20m Direct Conversion Receiver - W1VD 40m AM/CW/SSB Regenerative Receiver 80m Two CW/SSB Superheterodyne Receivers 80m SSB/CW/AM Superheterodyne Receiver 80m Receiver IF=9MHz 144 MHz All-FET Direct Conversion Receiver 144 MHz SSB/CW Direct Conversion Receiver 144 MHz Superregenerative Receiver 432 MHz SSB/AM Receiver - YO3AVE FM Direct Conversion Receiver PNP Shortwave Receiver Simplest Direct Conversion Receiver VHF Superregenerative Receiver HF MultiPig Receiver - W8DIZ 0.3 MHz - 30 MHz SSB/AM Receiver - DC1YB 40m Parametric-Regenerative Receiver - AA1TJ HF Simple Regenerative Receiver - N1TEV 40m Direct Conversion Receiver - DL2YEO 80m All-BJT's Direct Conversion Receiver 30m SSB Superheterodyne Receiver 40m CW-SSB Simple Superhet Receiver 80m-40m Direct Concersion Receiver - VK3AWC All HF Bands Direct Conversion Receiver 410 MHz - Superregenerative Receiver for Remote Keyless FM Broadcast Superregenerative Receiver - VK2ZAY Simplest Shortwave Receiver VHF Superregenerative Receiver - VK2ZAY 136 MHz Airband Dual-Conversion Receiver FM / AM Superregenerative Receiver VHF Superregenerative Receiver with Squelch - N1TEV 1 MHz - 30 MHz QRP Receiver - KD1JV 14 MHz Simple Superhet Receiver - W7ZOI 20m Two-Superhet's Receivers - K9AY 40m Superhet Receiver with 74HC4053 - KD1JV 40m CCS Superhet Receiver - WB0RMT 40m "Tuna-Twin-Too" Receiver - KO4WX Shortwave "PipSqueak" Receiver - NA5N 3 MHz - 5 MHz Cascade Regenerative Receiver - WD5HOH 3 x Superregenerative Receivers - RSGB 40m MRX-40 Receiver - K8IDN Multiband HF Direct Conversion Receiver - RSGB 7 MHz Rock-Bending Receiver - WI5W HF MicroR2 SSB/CW Receiver HF DCR Polyphase Receiver - G0UPL AM Receiver with PLL - 4046 Medium Wave Receiver for DX Short Wave AM Receiver with TCA440 Regenerative Short-Wave Receiver - NA5N 80m AM/CW/SSB Receiver - YC3LSB 80m AM/SSB Receiver - YC3LSB 2.5 MHz Receiver for OMA-2500 station FM Receiver with Auto-scan 220 MHz to 400 MHz Air-band Scanner HF Regenerative Receiver with Dual-Gate MOSFET Simple FM Receiver with Audio Amplifier 6m / 2m FM Receiver 20m DCR with Active Filter 80m / 40m DCR Receiver 80m One-Stage-IF Superhet Receiver Active Aircraft AM Receiver FM Broadcast Superhet Receiver Public Service FM Receiver Short-Wave Superhet Receiver Very Low Frequency Whistler Receiver Single-Signal Direct Conversion Receiver - KK7B 7 MHz AM/SSB/CW Receiver - VU3NSH HF I/Q SDR Receiver DR2 - YU1LM HF/VHF/UHF I/Q SDR Receiver AR1-1 - YU1LM 0.1 MHz - 30 MHz AM/SSB Receiver - 4Z5KY HF Direct Conversion Receiver - YU1LM 136 MHz AM Airband Dual-Conversion Receiver 144 MHz Super-Regenerative Receiver 7 MHz Direct Conversion Receiver - EA1RCT 40m CW Receiver - DK6SX 7MHz Direct Conversion Receiver - DG2XK 80m PSK31 Receiver - DM2CQL 137 MHz - 141 MHz Weather Receiver - OK2UGS 144 MHz 3ch FM Receiver - DJ9HH FM Receiver with PLL - DH1AAD HF Direct Conversion for SoftwareRadio - DK3WX Simple Two-IC Direct Conversion Receiver 80m Unconventional Receiver - DL1XR DRM Receiver - DL5CM DRM Receiver - DM2CWG FM-SSB Receivers with TA7358 0.1 MHz - 32 MHz Superhet-IQ Receiver - DL7LA 7 MHz JUMA-RX1 - DL1DMW 40m / 20m Superhet-Direct Conversion Receiver - DL1DH 50 MHz SDR - DM2CQL 80m / 40m SDR - DM2CQL 80m / 49m / 40m SDR - DL7LA 80m SSB Receiver - DL1DH 144 MHz Fox-Hunt Receiver - DF1FO HF Superhet Receiver - DL1DH MW Receiver - DL1XR SDR SoftRock - KB9YIG 80m Fox-Hunt SSB Receiver 144 MHz AM Receiver - DC9MD 144 MHz FM Receiver RSGB 80m / 40m Neophyte Receiver - WA3RNC 88 MHz - 108 MHz Direct Conversion Receiver Shortwave All-Transistors Direct Conversion Receiver MW and SW Simple Receiver Regenerative SW Receiver - 7N3WVM Shortwave Old-Style Receiver 0.1 MHz - 30 MHz AM/FM/CW/SSB/DRM Receiver 7 MHz Crystal Regenerative Receiver - KR1S HF DRM Receiver - OK2UGS 5-band Short Wave SSB-AM Receiver XCR-30 Short Wave SSB-AM Receiver HF CW Storm-2 Receiver - DK3RED Very Low Frequency Receiver - WA8SME HF CW-SSB Regenerative Receiver - N1TEV Short-Wave Junk-Box Regenerative Receiver - N1TEV 80m One-Band, One-Transistor Radio - WB2EUF Sudden HF Direct Conversion Receiver - G3RJV 80m "The Traveler" SSB Receiver - K5WMS Short Wave "Armstrong" Regenerative Receiver - KC3ZQ Tuned Diode Receivers - K1CLL 1 kHz to 7 kHz VLF Receiver 40m Regenerative Receiver - VK3IQ 4 MHz to 26 MHz "Goof-Proof" Regenerative RX - WB0NQM 40m Simple Superhet Receiver - AA1TJ WWV HF Receiver 5.5 MHz to 16 MHz Short-Wave Receiver 30 kHz to 70 MHz SDR - YU1LM HF DCR with SMT Components 7 MHz S7C Superhet Receiver HF I/Q Direct Conversion Receiver High Performance HF Direct Conversion Receiver VHF Super-Regenerative Receiver - ZL3VN HF All-bands Simple Direct Conversion Receiver 30m Plus Receiver - N4EY 80m-40m Direct Conversion Receiver - WA0RBR HF "Electroluminiscent" Receiver Medium Wave DX Receiver Short Wave General Coverage Receiver SW Receiver Tube to Solid-State Equivalent - W5JJ Two Transistors Receiver On-Board Aircraft Crystal AM Receiver Fun Radio - W6WTU 80m SSB Superhet Receiver - K4DHC 20m SSB Receiver - KG4CUY 40m Direct Conversion Receiver 3.8 MHz SSB Superhet Receiver - K4DHC 80m-40m-30m Superhet Receiver - WA6IVC 20m Micro-20 Receiver - K1BQT HF AM-CW-SSB Receiver 10m Superhet Receiver - WB2AGV Short-Wave Receiver - WB4NEX 2m FM Receiver - G3ZOI DCR Receiver - PY2RLM Short-Wave AM Receiver with TDA1072 Short-Wave AM-SSB Receiver with TDA1572 20m Regenerative Receiver - F9GY 20m Regenerative Receiver - G3RJT 80m-20m Regenerative Receiver - GI3XZM Regenerative SW to MW Receiver 28 MHz Regenerative Receiver Short-Wave Two-FET Regenerative Receiver 108 MHz - 136 MHz Air-Band Regenerative Receiver Short-Wave Regenerative Receiver BFW11 7 MHz Rock-Bending Direct Conversion Receiver 88 MHz 150 MHz Direct Conversion Receiver 118 MHz 136 MHz AirBand Direct Conversion Receiver HiRegen Regenerative Receiver 80m Tunnel Diode Receiver - AA1TJ 2m FM Receiver - PY2OHH 20m Receiver - PY2OHH 40m AM-CW-SSB Receiver - PY2OHH 40m DCR MC3361 - PY2OHH 40m Receiver - PY2OHH 40m Superhet Receiver MC3361 - PY2OHH 40m Superhet Receiver - PY2OHH 50 MHz to 900 MHz AM-FM Tuner - PY2OHH Aircraft Receiver - PY2OHH 20m SSB Receiver - M0DGQ 40m SSB Receiver - M0DGQ 50 MHz One-MOSFET Superregen Receiver - JF1OZL 80m DCR Receiver - M0DGQ 80m DCR Receiver - W1AW 80m One Transistor Receiver - M0DGQ Air Band AM Receiver - M0DGQ 28 MHz Superregen Receiver 220 MHz to 400 MHz Air-Band Receiver SDR SoftRock v6 - KB9YIG SDR SoftRock v7 - I7SWX 40m OCR Regen Receiver - N1BYT 80m Direction Finding Receiver - WB6BYU HF AM Short-Wave Receiver Lafayette HA-600 90m to 40m Crystal Radio - N7FKI Aviation Receiver - F5RDH VLF SDR - K1QW 3 Transitor Short Wave Radio 10 MHz WWV-WWVH Receiver 80m SSB Receiver MC3335 160m to 20m DCR NE602 Receiver AM Tuned Radio Frequency Receiver MW-AM BJT Receiver Nine Band Shortwave Receiver Shortwave Superhet NE602 Receiver 2m FM Receiver CA3089 80m, 40m, 15m Superhet Receiver 7 MHz All-PNP Direct Conversion Receiver - JH5ESM 7 MHz SSB Receiver - JH5ESM FM-AM Aircraft Band Receiver Monika LW-MW-SW Radio 80m Direct Conversion Receiver - SP3CCT CB AM TDA1072 Receiver 1.8 MHz High-Performance Front-End - W7ZOI 7 MHz Pocket Receiver - W7ZOI 80m-40m Superhet Receiver - W7ZOI 40m Sensistive Direct Conversion Receiver 500 kHz to 22 MHz DRM Receiver 500 kHz to 30 MHz Regenerative Receiver High-Performance Regenerative Receiver Improved Short Wave Regenerative Receiver Pocket FM Receiver Short Wave 3xFET Regenerative Receiver SW Dual Conversion Superhet Receiver SW FET-PNP Regenerative Receiver VHF Super-Regenerative Receiver 80m-20m Yearling Receiver - G3YMP Kenwood R300 Receiver 20m Direct Conversion Receiver - W1VD 20m SSB-CW Receiver - I0SJX 144 MHz One Germanium Simple Receiver 144 MHz and 28 MHz SSB Receiver - I4ZBD AM 3xPNP Receiver CB-Band Simple Regenerative Receiver HF Superhet Dual Conversion Receiver - K2BLA 20m All Dual-Gate MOSFET Receiver - W1FB 30m Superhet SSB Receiver - KC1V Butler Mode Regenerative Receiver Regenerative Receiver with AGC 40m SSB Receiver - PA2HS 80m SSB Receiver with 9 MHz IF - W1FB 80m SSB Receiver with 455 kHz IF - W1FB 75m-20m Minimum Components Superhet Receiver Shortwave Regenerative Receiver - K1DG 1xGe BJT VHF Air-Band Receiver All HF Bands Superregen Receiver - WB0NQM HF Superregen Receiver with BF981 Superhet AM Receiver TR-1 28 MHz No-Radiation Regen Receiver 80m "Sardine-Ceiver" - NY9D 162 MHz Tunable FM Receiver - W6GXN Short Wave Regen Receiver - W7GNT 20 MHz to 50 MHz Regen Receiver Vari-L 80m Versatile Superhet Receiver - W1PLJ 80m-40m Direct Conversion Receiver - K1BQT 144 MHz AM-FM Superhet Receiver - WA9CGZ 80m Superhet SSB Receiver - VE3ELP 28 MHz Super-Regenerative Receiver 80m-40m-20m One Diode DCR - K6BIJ HF Superhet SSB Receiver - K6SDX VHF FM Superhet Receiver - WA2GCF 20m Micropower 15mA SSB Receiver - WB9FHC 80m-30m Phasing Receiver - WA0JYK HF Superhet Plessey ICs Receiver - G8FNT VHF All-Mode Superhet Receiver - W1SNN VHF Low Voltage Regen Receiver - WA5SNZ WWV Regen Receiver - WA5SNZ 6m Direct Conversion Receiver - LY3LP 6m Superhet Receiver LA1185 - LY3LP 10m Direct Conversion Receiver LA1185 - LY3LP 10m Direct Conversion Receiver - LY3LP 10m Superhet Receiver LA1185 - LY3LP 20m Direct Conversion Receiver - LY3LP 80m-40m SSB Receiver - K4DHC 144 MHz Continuous Coverage Receiver - W6AOI 434 MHz Superregen Receiver - LY3LP 868 MHz Remote Control Receiver - LY3LP 1296 MHz Superregen Receiver - LY3LP 5-Bands Dual Conversion Receiver - I5TDJ HF Selective Regenerative Receiver - W3FQJ 3.2 MHz to 30 MHz Dual Conversion Receiver - PY2EIC 80m Superhet Receiver - YO3EM 144 MHz FM Receiver - W1CMR 20m Dual Conversion Receiver - K6SDX All Mode Receiver Plessey ICs - DJ2LR High Linearity HF Receiver - DJ2LR Noise Blanking Receiver TCA440 - DJ2LR WWV, WWVH, CHU Receiver 40m Dual Conversion Receiver - K6SDX 2 MHz to 7 MHz SW AM Superhet Receiver - PY2PE1C 40m CRX-1 Superhet SSB Receiver 40m Superhet SSB Receiver - W6XM 80m Superhet SSB Receiver - W6XM 49 MHz to 55 MHz Superregen Receiver 80m Fox-Hunt Receiver - HA7SG 85 MHz to 150 MHz Superregen Receiver HF Superhet Receiver with PLL - K2BLA 6 MHz to 9 MHz Superhet Short Wave Receiver - W6XM 20m Superhet SSB Receiver - K1BQT 80m - 20m Superhet SSB Receiver - WA3TFS 20m Superhet Receiver - N3ECZ 80m Receiver CA3028 - WB2EAV 10m Direct Conversion Receiver - W6VEH 60 kHz Receiver - W4ZPS 144 MHz FM Receiver MC3362 - WA3ENK HF-VHF AM-FM Receiver - WA2NDM 3.4 MHz to 8.5 MHz Regen Receiver - W1FB 7 MHz Direct Conversion Receiver - W1FB 7 MHz Improved Direct Conversion Receiver - W1FB 20m Direct Conversion Receiver - W1FB 40m Simple Superhet Receiver - W1FB 80m - 40m Simple Superhet Receiver - W1FB 31m Band Regenerative Receiver - AA7EE 49m AM Receiver TCA440 80m - 40m DCR - DM2CQL AM Four Transitor Superhet Radio AM Inductorless Receiver AM Two Transistor Superhet Receiver LW, MW, SW, Direct Tuning Receiver - DG0KW One BJT Reflex Radio 20m Tuned IF SSB Receiver 40m - 20m Direct Conversion Receiver 40m DCR - AA1JJ HF Receiver - LZ3NF VLF SSB Receiver NE612 Wee-Willy Receiver 80m SSB Receiver NE612 - SQ7JHM 1.8 MHz - 2 MHz SSB Superhet Receiver 3.5 MHz SSB Receiver TDA1083 - US5QBR 3.75 MHz - 4 MHz SSB Superhet Receiver 7 MHz - 11 MHz High Performance Regen Receiver 40m ZetaSDR - LY1GP 80m TinySDR - LY1GP 3.5 MHz - 7 MHz Direct Conversion Receiver HF Phasing SDR HF Regen Receiver - BH1RBG HF Simple SDR IQ-output 40m - 30m - 20m Receiver - KD1JV 136 kHz Direct Conversion Receiver - IK2PII HF SSB Receiver Variable IF Bandwidth MW Regenerative Receiver - VK2ZAY Simplest Superhet Receiver 20m Direct Conversion Receiver with AGC 30m Autodyne Receiver - VK2ZAY 40m Direct Conversion Receiver BF173 40m Direct Conversion Receiver BF981 80m Regenartive Receiver 2N2222 80m Superhet Receiver 74HC4066 Air-band On-Board Passive Receiver - VK6FH HF Direct Conversion Receiver 3xBJT HF SSB Receiver - VK6FH HF Superhet/DCR SSB Receiver - VK6FH MW SW Reflex Receiver Super-Regenerative FM Receiver - VK2ZAY SW Reaction Receiver 40673 SW Reaction Receiver BF245 VHF Direct Conversion Receiver J310 VHF Super-reaction Receiver 80m X-tal-tuning Receiver - AA7EE 432 MHz FM Receiver SL6600 VHF FM Receiver - SL6640 - F6DTA 19m-band Receiver TCA440 20m SSB Receiver MC3362 - K9AY 40m, 30m Super-Gainer Receiver - GM4HTU 20m Direct Conversion Receiver BC107 AM Crystal Radio MC1458 AM Magnum Antenna Booster and Receiver Short-Wave Simplest Receiver DRM Receiver - OK2UGS DRM Receiver NE612 - OK2UGS 15 kHz - 100 kHz VLF Receiver - G8MWR 19m,16m,13m Regenerative Receivers 40m DCR J304 G3RJV 50 MHz SSB Otter Receiver - G8JVE 80m SSB Receiver - K5WMS 88MHz - 108 MHz 3 x Super-Regenerative Receivers Beginner's SW Receiver Regenerative Detector Receiver BF981 Very Low DC Current AM Receiver 14 MHz DCR CA3127 - W1FB 40m Mini-Miser SSB Receiver - W1CER 50 MHz SSB Receiver - K1ZJH 144 MHz SSB Receiver with PLL - ZL1AHQ 3.5 MHz to 22 MHz DCR Receiver MFJ-8100 3.58 MHz CW Simple Receiver 80 MHz to 125 MHz AM-FM Regenerative Receiver 100 MHz to 150 MHz FM Regenerative Receiver 100 MHz to 170 MHz FM Regenerative Receiver 1.5V FM Regenerative Receiver with AM Suppression HF Regenerative Receiver 3xJ330 HF Regenerative Receiver with Auto Control HF Upconversion SSB Receiver - K2BLA High Sensitivity 3V Receiver MW Direct Amplification Receiver SW Regenerative Receiver 2 x 2N2222 SW Regenerative Receiver 3 x J310 SW Regenerative Receiver Opto-isolator 3 MHz - 18 MHz Regenerative Receiver - F5LVG 5 MHz - 11 MHz Starter Receiver - W6SAI 28 MHz - 144 MHz FM Receiver - G4PMK 40m,20 _Subharmonic-Mixer DCR - LA8AK 80m Direct Conversion Receiver - G4TXG 80m DCR with PLL - VK2DOB 80m Newbury Receiver - G4BWE 80m Pineham Receiver - G3ROO 80m-20m Superhet Receiver - G3BWE 80m-20m Yearling Beginners Receiver - G3YMP 160m SSB Receiver TDA1072 - G4ENA HF 1-T-1 Receiver - G3DXZ High-IP3 Superhet Receiver - OZ5KG 1.8 MHz Harmonic Mixer Receiver - RA3AA 1 MHz - 8 MHz AM Receiver TCA440 - HB9BBN 2m Harmonic - Mixer Receiver - UA3AX 3 MHz - 4 MHz Superhet Receiver - G3WPO 20m 4xMOSFET Receiver - W1FB 20m Direct Conversion Receiver - G8TYY 20m Straight Regenerative Receiver - F9GY 80m,20m Regenerative Blooper Receiver - GI3XZM Oscar 29 MHz DCR 1.8 MHz Binaural Receiver - VK6APH 3.5 MHz - 28 MHz TX-Monitor Receiver - VK3XU 28 MHz DCR - W6VEH 144 MHz NBFM Superregen Receiver - N1TEV 144 MHz SDR IQ-out - G4JNT 144 MHz - 28 MHz Receive Converter - G4DDK CDG2000 Receiver - G3SBI Crystal Set Receivers HF NE602 Receiver - N1BQT Pocket VHF-FM Receiver - G3VA SSB-CW RF Monitor VHF Superregen Receiver - G4DTC VLF Electro-mechanical Receiver - M0BMU VLF Receiver Solar Flares - W2AXU VLF Trafalgar Receiver - EI3CY 6 MHz to 15 MHz AM Superregen Receiver 20m Bare-Bones Superhet Receiver - W1FB 27 MHz CB mini-Receiver 30m Mini-Miser Superhet Receiver - KC1V Avionics Band Superregen Receiver Eight Simple Reflex Receivers Medium-Wave AM Receiver BC549C 5 MHz - 10 MHz WWV Receiver - WD8DSB 20m Superhet 2xNE612 Receiver 27 MHz RC Modified Receiver 27 MHz RC Receiver 80m ARDF Receiver PJ-80 AM Ge Little-Star Receiver Ch-19 AM Receiver TCA440 HF Universal SSB Receiver - W8DIZ Short-Wave AM Receiver - TDA1572 WWV-CHU Receiver TCA440 40m Superhet Receiver - KD1JV VHF Receiver MC3361 - FC1ASK Weaver SSB Receiver - G0UPL
Transmitters and Beacons	Transverters and Converters
10W 40m CW Transmitter 2m Band Beacon Beacon for 144 MHz Beacon for VHF HF QRP CW Transmitter VHF Beacon Wireless AM Microphone X-tal VHF FM Transmitter 7 MHz CW QRP Transmitter 14 MHz CW QRP Transmitter 145 MHz X-tal FM Transmitter 27 MHz AM/FM Transmitter HF QRP CW Transmitter VXO - W7ZOI FM Audio Transmitter with Monitor 0.5W FM Transmitter 88MHz-108MHz 7 MHz 5W QRP Transmitter 7 MHz 12W Transmitter - NB6M 10m VXO QRP Transmitter - NB6M 27 MHz 2W Transmitter 40m 5W CW Transmitter - N1HFX 75m Phasing SSB Exciter - WA7JHZ Miniature Tracking Transmitter 4W PLL FM Transmitter - XQ5FOD 20m 1W Transmitter - PA2OHH 40m CW Transmitter - PY2MG HF SSB Exciter - KD1JV 3 GHz Beacon - G4DDK 5.7 GHz Beacon - F6BVA SHF Micro-beacon - F4BAY 6m CW Transmitter - VE7GC 1W HF CW Transmitter 50 MHz QRP AM Transmitter 80m-40m 6W CW Transmitter 80m Beacon 144 MHz 1W FM Transmitter 144 MHz AM/FM VFO Controlled Transmitter 144 MHz Low Power Beacon - YO3AVE 432 MHz CW Transmitter 432 MHz QRP FM Transmitter 1296 MHz Simple Transmitter QRP Transmitters 1.65 MHz QRP AM Transmitter 88 MHz - 108 MHz FM Transmitter HF Low-Power AM Transmitter 88 MHz - 108 MHz X-tal controlled 1W FM Transmitter 30m CW Transmitter 80m CW VFO Transmitter VLF 15W Transmitter 9 MHz SSB Modulator 88 MHz - 108 MHz 0.5W FM Transmitter High-Quality AM Transmitter 27 MHz 4W AM Transmitter 2W Two-Bands Transmitter - VK3XU 7 MHz QRP VFO Transmitter - W7ZOI 14 MHz 1W VFO Transmitter - W8PJ 40m QRP CW Transmitter - WB8VGE 40m The-QRP-Key Transmitter - WA8MCQ All-Bands VXO Transmitter - KN1H 2m Low-Power CW Beacon 9 MHz SSB Modulator Phasing-Method - RSGB SSB Modulators Filter-Method - RSGB 88 MHz - 108 MHz 25mW FM Transmitter 88 MHz - 108 MHz 20W FM Transmitter 40m MicroT2 SSB/CW Transmitter HF MKII All-Band CW Transmitter 88 MHz - 108 MHz 20W PA - ON6MU 80m Fox Beacon AM Broadcast mini-Transmitter SSB Generator - JG1EAD 1 MHz - 500 MHz Multimode Phasing Exciter - KK7B 2.32 GHz 0.7W Beacon - LA3UHH 27 MHz QRP AM Transmitter Simple FM Sender MAX2606 144 MHz Fox-Hunt Transmitter 144 MHz CW-AM-FM QRP Transmitter - DJ8PG 144 MHz FM-AM Transmitter - DL3WR 144 MHz Transmitter - DC9MD 144 MHz 1W NBFM Transmitter 144 MHz 5W SSB TX - DJ9ZR 6m Beacon - WB2AMU 144 MHz 350mW Beacon - 9A4QV 10 GHz Beacon - W1GHZ 88MHz to 108 MHz Low Power Transmitter 10m SSB Transmitter - NZ5G 10 MHz 3W CW Transmitter - WB6VGE 50 MHz DSB Transmitter - KL7GLK 7 MHz 2.2W CW Transmitter 7 MHz 123mW CW Transmitter 14 MHz 4W VXO Transmitter Phased SSB Exciter SSB Generator 14 MHz to 21 MHz 5W CW Transmitter 10m Double Side Band Transmitter - WA4ADG 10m Double Side Band Transmitter - K4EPI 144 MHz FM Transmitter - WB6BIH FM 5W SENTOR Transmitter 7 MHz CW-AM Transmitter 50 MHz 30W Beacon - N6CA FM Transmitter 300mW 14 MHz 4W QSK Transmitter - WB8VGE 40m Rock-Bender 3W Transmitter - WI5W 88 MHz - 108 MHz FM Wireless Transmitter 137 kHz CW Transmitter - G3LDO 30m QRP CW Transmitter - WB8VGE 40m DSB/CW QRP Transmitter - WA5WWN 27 MHz 4W Class-D Transmitter 144 MHz 140mW Beacon Oscar-1 70 MHz to 109 MHz PLL Transmitter MW 70W AM Transmitter with BUZ71 2m 1W FM Transmitter - PY2OHH 40m QRP DSB Transmitter - PY2OHH 315 MHz AFSK Transmitter 20m 10W CW Transmitter - M0DGQ 40m 10W CW Transmitter - M0DGQ 1296 MHz Beacon - PE9GHz 2330 MHz Beacon - PE9GHz 80m 5W DSB Transmitter - VK3YE 88 MHz - 108 MHz 500mW FM Transmitter 80m and 40m QRP CW Transmitter - N1TEV 88 MHz to 108 MHz 1.5V FM Transmitter 88 MHz to 108 MHz Dual-FET FM Transmitter 88 MHz to 108 MHz FET FM Transmitter 100 MHz TTL Transmitter 74LS13 10m CW-DSB Transmitter 80m 1.5W QRP Transmitter 80m 45W CW Transmitter IRF840 100 MHz Pulse Modulated Transmitter VLF Pulse Transmitter 136 kHz 5W Transmitter - G4CNN 7 MHz 0.5W CW Transmitter - JH5ESM 7 MHz CW QRP Transmitter - JH5ESM 10.140 MHz 1W CW Transmitter - JH5ESM 12 MHz SSB Generator SN16913 - JN1NGC 18.100 MHz 1W Transmitter - JH5ESM 88 MHz - 108 MHz Wideband FM Jammer SSB Generator SN16913 - JK1XKP 6m DSB QRP Transmitter - W7ZOI 11.5 MHz SSB Exciter HEF4052 15m 6W Transmitter - W7ZOI 40m QRP Transmitter - W7ZOI 50 MHz QRP CW Transmitter - W7ZOI 160m QRP Transmitter - W7ZOI 136 kHz 1kW Transmitter - G3YXM 7 MHz 50mW One Transistor Transmitter - W1FB 7 MHz Vackar VFX Transmitter - K6BSU 27 MHz 2W AM Transmitter 28 MHz 5W CW Transmitter 80m 2W "Sardine" Transmitter - W1FB 144 MHz DSB Transmitter 3.7 MHz 3W CW Transmitter - W1FB 75m Voice Powered DSB Transmitter - AA1TJ 80m QRP Transmitter with T/R Switch and LNA - W1FB No Inductors AM QRP Transmitter 7 MHz 2xFET QRP CW Transmitter 27 MHz 2W FM Transmitter - IW0CZP 144 MHz 200mW Modulated Beacon 7 MHz 2W One BJT CW Transmitter - W6BLZ 28.225 MHz Beacon 28 MHz 10W Vackar VFO Transmitter - K2ZSQ 50 MHz 6W CW Transmitter 80m-40m 8W CW Transmitter - W7IGV 108 MHz Tracking Transmitter - K2ZSQ HF 5W CW Transmitter with 2N3053 HF 100mW CW Transmitter HF mW CW Transmitter - W5TYP Short Range AM Transmitter 40m 5W VFO CW Transmitter - W6EAC 7 MHz 0.5W CW Transmitter - K0VQY Any Crystal QRP CW Transmitter 144 MHz 8W Phase Modulated Transmitter - W6AJF VHF 2W FM Transmitter - WA0UZO VHF 200mW Phase Modulated Transmitter - K2BLA 7 MHz Seiler CW QRPP Transmitter - W3FQJ 144 MHz 6W FM Transmitter - W9SEK HF 1W CW Transmitter - K8EEG HF Push-Push QRPP CW Transmitter - W3FQJ 20m 2W Vackar VFO CW Transmitter - W3QBO 6m 1W CW Transmitter - LY3LP 10m 1W CW Transmitter - LY3LP 10m 1W MOSFET Transmitter - LY3LP 10m 100mW Beacon - LY3LP 13m 1W CW Transmitter - LY3LP 70cm 100mW Beacon - LY3LP 144 MHz 2W FM Transmitter - W6AOI 1300 MHz SAW Resonator Transmitter - LY3LP 80m JFET QRP Transmitter - W3FQJ Phasing Type SSB Transmitter - WA0JYK 40m 10W CW Transmitter - WA4MTH 144 MHz 5mW Beacon - W1JAA 160 kHz Low Frequency CW Transmitter - K1RGO 15m - 10m 1W CW Transmitter - W1FB 30m 1.5W CW Transmitter - W1FB 136 kHz 50W Transmitter - DF3LP 136 kHz 100W Transmitter - DJ1ZB 136 kHz 120W Transmitter - PA0SE HF DSB Transmitter - W1FB FM Transmitter MAX2606 No-Inductors Simplest FM Transmitter 50 MHz Exciter - KK7B 3.5 MHz QRP CW Transmitter 3.55 MHz X-tal Beacon 3.587 MHz AM Transmitter 40m, 20m CW Transmitter 88 MHz - 108 MHz Transmitter BF240 88 MHz - 108 MHz Transmitter BFR90 88 MHz - 108 MHz Transmitter BFR96S 88 MHz - 108 MHz X-tal Harmonic Transmitter ICS501 97.71 MHz X-tal Beacon FM Band 1.5V Tracking Transmitter 27 MHz 6W FM Transmitter 50.15 MHz 100mW AM Transmitter 80m 1.5W CW Transmitter/Beacon - VK2ZAY Dual-Gate MOSFET FM Transmitter - VK6FH HF 3W CW TX-Beacon VHF 2W FM Transmitter 7 MHz 10W CW Transmitter 72 MHz, 144 MHz, 432 MHz, 1296 MHz, 10368 MHz Beacon 88MHz - 108 MHz 1W Tuned FM Transmitter 88MHz - 108 MHz PLL FM Transmitter 100 MHz PLL FM Transmitter 101 MHz 1W FM Transmitter 144 MHz PLL Beacon - F6DTA 3.59 MHz 1W CW Transmitter 7 MHz 1.5W CW Transmitter - F9BCU 27 MHz 10-tones AM modulated Transmitter 80m 5W Novice Transmitter - G4BWE 50 MHz 2W Beacon - WB2AMU 144 MHz 5W AM Transmitter - W7HCV 144 MHz 10W FM Transmitter - W1CER 1.8 MHz QRP AM Transmitter - GW3MEO 1.8 MHz QRP DSB Transmitter - G3VTT 40m 10W AM Transmitter IRF510 144 MHz 3W FM Transmitter - G8JVE 3.5 MHz 2W CW Transmitter "Sardine" - W1FB 20m 6W CW Transmitter - W1VD 21 MHz 10W CW Transmitter - WA1LNQ 40m CW Transmitter Vackar-VFO - K6BSU 40m-20m CW QRP Transmitter - W1CER 80m,40m QRP CW Transmitter - W0MCN 80m CW-DSB QRP Transmitter - W6CJM 40m 1.5W CW Transmitter 2N3553 - W7ZOI 40m 300mW 1xBJT CW Transmitter - W1FB 3.5 MHz 1W CW Transmitter VK1010 - LA8AK 3.59 MHz 1W VFX Transmitter - G3BBD 7 MHz QRP CW Transmitter - WA8MCQ 50 MHz 2W CW Transmitter - G3ROO 80m 3W Nipper Transmitter - G3ROO 80m - 30m Switch Mode CW Transmitter - G3DXZ 1698 MHz Transmitter Lemon Battery Transmitter - W7ZOI 10.1 MHz 300mW CW Transmitter - W1FB 24.9 MHz 4W CW Transmitter - W1FB HF 1W CW Transmitter - GM3OXX HF Full-QSK CW Transmitter - G3DXZ Sun-Powered Transmitter - G3MHO 3.5 MHz AM-CW Transmitter - ZS6AZP 7 MHz 50W MOSFET Transmitter - G8PDW 10m 20W FM Transmitter - G4JQT 10 MHz Clean Output Beacon 136 kHz 300W Transmitter - G0MRF Infra Red FM Transmitter - G8GYV 28.060 MHz 5W CW Transmitter - DK6SX 40m 1W CW Transmitter 2N2222A - KC1V 27 MHz RC Multi-channel Transmitter 88-108 MHz 1W FM Transmitter 88-108 MHz 7W FM Transmitter	1.3 GHz Transverter - DB9LN / DB6NT 2.3 GHz to 144 MHz Transverter - DB6NT 5.7 GHz Transverter - DB6NT 10 GHz to 144 MHz Transverter - DB6NT 50 MHz Transverter - OE9PMJ 144 MHz to 28 MHz RX Converter MOS 144 MHz to 28 MHz RX Converter FET VHF to 1.3 GHz up-converter 1296 MHz to144 MHz Transverter - F5LGJ 10 GHz Transverter 70 MHz to 28 MHz Transverter - OZ2M No-Tune Transverter 1.3 GHz to 144 MHz - KK7B No-Tune Transverter 2304 MHz to 144 MHz - W8NLC Javornik 144 MHz to 14 MHz Transverter - S53WW 50 MHz junk-box converter - WA3ENK 50 MHz to 28 MHz Transverter - DK7ZB 50 MHz to 28 MHz simple Converter 144 MHz to 28 MHz Transverter Very Low Frequency Converter 0-250 kHz to 3.5 MHz UHF to VHF TV Converter 144 MHz to 28 MHz Receive Converter - N0GZ 1296 MHz Transverter - W1GHZ 144 MHz to 28MHz Transverter - LT2S 23cm to 70cm Transverter - I2SG 144 MHz to 2.4 GHz Upconverter 1.3 GHz to 144 MHz Transverter - OE9PMJ 2.3 GHz Transverter - DC8UG 5.7 GHz ATV Converter - DL1IN 70 MHz to 21 MHz Transverter - DF2FQ 2.32 GHz to 144 MHz Converter - DL5NEG 40m to 11m Transverter - PY2MG 50 MHz to 28 MHz RX Converter - PY2MG All-Bands HF to 9 MHz IF Transverter - YO3DAC/YO3BAL 144 MHz to 14 MHz Transverter - SM0VPO 2.3 GHz ATV Upconverter - F1HPR 2.3 GHz to 432 MHz Converter - DL5NEG 144 MHz to 28 MHz Transverter - WA6CDR 868.3 MHz to 144 MHz Transverter - F1JGP 1296 MHz to 144 MHz Transverter - F1OPA 0-550 kHz Very Low Frequency Converter 1.3 GHz ATV Downconverter 1.8 MHz to 28 MHz Transverter - YO2IS 24 MHz to 7 MHz Receive Converter 28 MHz to 432 MHz Linear Up-Converter 144 MHz to 14 MHz Transverter 144 MHz to 28 MHz RX Converter - YO3BAL / YO3DAC 144 MHz to 28 MHz Converter 2m to 10m RX Converter 144 MHz to 1296MHz Up-Converter 432 MHz to 28 MHz RX Converter 432 MHz to 50 MHz Transverter 432 MHz to 144 MHz RX Converter - YO3BAL 432 MHz to 144 MHz Downconverter 432 MHz to 144 MHz Transverter 1296 MHz to 144 MHz Receive Converter 28 MHz to 50 MHz Transverter - RSGB 136 kHz to 4.137 MHz Transverter - RSGB 50 MHz to 27 MHz Transverter - YC3LSB 80m to 40m Transverter - YC3LSB 27 MHz to Short Waves Converter AM Air-Band to Short Waves RX Converter 144 MHz to 6 MHz Converter 144 MHz to 10.7 MHz Downconverter 144 MHz to 10.7 MHz VFO Converter 50 MHz RX Converter - JR1PWZ 144 MHz to 50 MHz Transverter - DG0ZB 432 MHz to 28 MHz Transverter - DJ8ES Multiband Receive Converter - DL2JSH Weather Satellite Converter 10.95 GHz to 950 MHz LNA/Downconverter - YU3UMV 69 MHz to 5.5 MHz Converter - DG0ZB 70/50 MHz to 28 MHz RX Converter - DL7HG 432 MHz to 144 MHz Transverter - DF5SL Dual-Band Up-Converter - DL7VFS 14 MHz to 9 MHz Tuned Transverter - DL6HA 14 MHz to 144 MHz Upconverter - DL6HA 28 MHz to 432 MHz Upconverter - DJ6ZZ 144.3 MHz High Selective Converter - DL1LS 144 MHz to 432 MHz Upconverter - DL6MH 144 MHz to 14 MHz RX Converter - DL6HA 432 MHz to 144 MHz RX Converter - DL9FX 1296 MHz to 144MHz RX Converter - DL9JU 2304 MHz to 144 MHz Converter - DJ1EE Simple VHF-to-HF Converter 28 MHz to1296 MHz Upconverter - DF8QK 144 MHz to 1296 MHz TX Upconverter - DC8UG 144 MHz Converter MOS LNA - DC0DA 1296 MHz to 144 MHz RX Converter - DJ5XA 2304 MHz to 144 MHz RX Converter - DC0DA 2305 MHz to 144 MHz RX Converter - DL2AS 144 MHz to 28 MHz Transverter - DK8DD 432MHz_28MHz_Transverter - DJ3VY 1296 MHz to 144 MHz RX Converter - PA2HWG 1296 MHz to 144 MHz SSB Transverter - DJ1EE 144 MHz to 9 MHz Receive Converter - DJ9ZR 144 MHz to 28 MHz Receive Converter - DL6SW 432 MHz to 144 MHz Receive Converter - DL9GU 432 MHz to 144 MHz Transverter - DL9JU 1296 MHz to 28 MHz Receive Converter - DL3WR 1.3 GHz to 432 MHz Receive Converter - DJ8ES 1.6 GHz to 134 MHz Receive Converter - DF9DA 432 MHz Receive Converter - DD2EK C-band to S-band Receive Converter - YT3MV 902 MHz to 28 MHz Receive Converter - W0PW 1296 MHz to 28 MHz Receive Converter - W0PW 220 MHz to 144 MHz Transverter - WA7SPR 1296 MHz Receive Downconverter - WB6IGP 152 MHz to 144 MHz Receive Converter - W9DJZ 5.6 GHz to 144 MHz Receive Converter - WB6IGP 50 MHz to 1.6 MHz Receive Converter - K1CLL 144 MHz to 14 MHz Receive Converter - WB6BIH 10.1 MHz to 4 MHz Low-Noise Converter 144 MHz Dual-Gate MOSFET Converter 144 MHz to HF Receive Converter VHF Receive Converter - W8RHR 2m to 10m FM Transverter - WB5IPM Harmonic Utility Converter - K4DHC VLF to 80m Receive Converter - WD4PLI 29.450 MHz to 7 MHz Receive Converter - W2EEY 144 MHz to 28 MHz Receive Converter - K1CLL 3456 MHz Transverter - W1VT 144 MHz to 28 MHz Receive Converter REW 2304 MHz Transverter - WA0IQN 2304 MHz to 144 MHz Receive Converter - KT2B 2314 MHz to 63 MHz Receive Converter 50 MHz Receive Converter - WB4KMB 144 MHz to HF PLL Transverter - W4BF 144 MHz to 28 MHz Transverter - Light - RA3WDK 144 MHz to 28 MHz Transverter - Pro - RA3WDK 220 MHz to 22 MHz Transverter - W6YUY VHF-UHF to 10m Converters - WB2AGV VLF to 10 MHz Converter - W3QVZ 432 MHz to 28 MHz Receive Converter - DF1JM 432 MHz to 144 MHz Transverter - DF1JM 144 MHz to 10MHz-IF Front-End Converter 10 GHz to 144 MHz Transverter - G3WDG Short-Wave to MW Converter 144 MHz to 28 MHz No-Crystal Receive Converter 20 kHz to 5 MHz Receive Converter - Wenzel 455 kHz to 12 kHz DRM Converter with Ceramic Oscillator 455 kHz to 12 kHz DRM Converter Simple Mixer and Oscillator for DRM 144 MHz to 28 MHz Receive Converter - M0DGQ 144 MHz to 28 MHz No-X-tal Receive Converter 10 GHz to 144 MHz Transverter - DB6NT 70 MHz to 144 MHz Transverter - ER1LW 70 MHz to 28 MHz Transverter - YO2LGX 70 MHz to 50 MHz Transverter - YO2LGX 144 MHz to 27 MHz Transverter - RA3RBE 432 MHz to 144 MHz Transverter - RA3RBE 0-510 kHz to 4 MHz Receive Converter - K1QW CB to AM-Band Receive Converter 50 MHz to 28 MHz Receive Converter - W2DUC 136 KHz to 10.136 MHz Transverter - GW4ALG 144 MHz to 28 MHz Receive Converter - W2DUC 1296 MHz to 28 MHz Receive Converter - W2CQH 3.5 MHz-SSB to 20 kHz-Light Transverter - G8CYW LF to MF-HF Receive Converter - M0BMU 1.8 MHz to 14 MHz High Performance Receive Converter - W1FB 50 MHz to 14 MHz Transverter - W6HPH 144 MHz to 72 MHz Receive Converter 220 MHz to 28 MHz Transverter - W6HPH CB-Band to MW-Band Receive Converter 30m to 40m Transverter - W1FB 432 MHz to 28 MHz Receive Converter - W6IOJ 915 MHz ATV Receive Downconverter - K2CWL 144 MHz Receive Converter with JFETs 50 MHz to 14 MHz Low Noise Receive Converter - W6AJF 50 MHz to 14 MHz Receive Converter - WB2EGZ 144 MHz to 14 MHz MOSFET Receive Converter - WB2EGZ 144 MHz to 14 MHz 2xLNA Receive - Converter - WB2EGZ 144 MHz to 14 MHz Low Noise Receive Converter - W6AJF 144 MHz to 14 MHz Receive Converter - W1DTY 144 MHz to 29 MHz Receive Converter - WA6SXC 220 MHz to 14 MHz Low Noise Receive Converter - W6AJF 432 MHz to 14 MHz Low Noise Receive Converter - W6AJF 432 MHz to 28 MHz Receive Converter - WA6SXC HF to 3.5 MHz Receive Converter - VE3GFN 220 MHz to 14 MHz Receive Converter - WB2EGZ 40m-10m to 80m Receive Converter - VE3GFN 144 MHz to 28 MHz Receive Converter - W6UOV 144 MHz to 28 MHz Receive Converter - WA6NCT 432 MHz to 28 MHz Receive Converter - K6JC 1296 MHz to 28 MHz Receive Converter - VK4ZT 50 MHz to 14 MHz Deluxe Receive Converter - WB2EGZ 144 MHz to 14 MHz Deluxe Receive Converter - WB2EGZ 40m-20m to 80m Receive Converter - VE3GFN 2304 MHz Converter - WA2LTM 28 MHz to 144 MHz SSB Up-Converter - W6NBI 1296 MHz to 427 MHz Receive Converter - LY3LP UHF Converter - WA2GCF 144 MHz to 28 MHz Transverter - WB6BPI 144 MHz to 10.7 MHz Receive Converter - DJ2LR 1.3 GHz to 144 MHz Receive Converter - DL4NA 28 MHz to 432 MHz Up-Converter - DJ9HO 432 MHz to 144 MHz Selective Converter - DJ9HO 432 MHz to 28 MHz Receive Converter - N9KD SW to MW Receive Converter - PY2PE1C 12 kHz - 250 kHz to 3.5 MHz Receive Converter - K1RGO 1 GHz Harmonic Downconverter - N6GN 10 GHz Harmonic Downconverter - N6GN 144 MHz to 28 MHz Transverter - WB4EHS 10 kHz-550 kHz to 1.01 MHz-1.55 MHz Receive Converter 144 MHz to 28 MHz Q-multiplier RX Converter - WA9HUV Short-Wave to 3.5 MHz Receive Converter - W5FG 30 MHz to 10.7 MHz Receive Converter - W4UCH 98 MHz to 29 MHz Receive Converter - W4UCH 136 kHz to 14.136 MHz Receive Converter - DJ1ZB 432 MHz to 28 MHz Transverter - KA9LNV VLF to 14 MHz MC1496 Receive Converter - G4GVC 1.4 GHz to 121 MHz Dual Converter - VK6ZT 2.3 GHz Transverter - GM8OTI 50 MHz - 70 MHz - 144 MHz Transverter - DC8RI DRM Converter DW01 SW to MW Receive Converter 70 MHz to 28 MHz Transverter - 9A7PJT 70 MHz to 28 MHz Transverter - G4DDK 144 MHz to 28 MHz Transverter Compact 1.3 GHz to 144 MHz Transverter - F6CER 144 MHz to 1296 MHz TX Converter - F8CER 2400 MHz to 144 MHz Receive Converter 10 GHz to 144 MHz Receive Converter - G3WDG 144 MHz to 1136 MHz TX Converter - F8BCU 144 MHz to 50 MHz Transverter IE500 432 MHz LNA - F8BCU 10368 MHz to 144 MHz Receive Converter - F8BCU 2.3 GHz to 144 MHz Receive Converter - W4HHK 3.5 MHz to 550 kHz Down-Up Converter - W1CER 40m SSB Receiver - OK2UGS 80m,40m,20m SSB Receiver - W2NH 144 MHz FM Receiver - G8FTB 144 MHz to 550 kHz Down-Up Converter - W1CER 144 MHz to 28 MHz Receive Converter - W1CER All-Bands to 3.5 MHz Receive Converter - W1KLK SW to MW Receive Converter - K9KZT 5 kHz - 420 MHz to 29.5 MHz Receive Converter 50 MHz to 28 MHz Transverter - G4HUP 432 MHz to 144 MHz Receive Converter - G8TYY 435MHz to Ch37 ATV Receive Converter 1.8 MHz to 28 MHz Receive Converter - W1FB 1.8 MHz to 28 MHz Receive Converter - WA3JSU 14 MHz to 7 MHz Receive Converter - W1CER 21 MHz to 3.5 MHz Receive Converter - W1ICP 28 MHz to 144 MHz Transmit Converter - W1SL NBS-WWV Receive Converter - WA6GVC 14 MHz to 28 MHz TX Upconverter - KE4Y 50 MHz to 14 MHz Bilateral Transverter - W6HPH 220 MHz to 28 MHz Bilateral Transverter - W6HPH 50 MHz to HF Receive Converter - ZL4THO VLF Front-End Converter - G3PVH 50 MHz - 28 MHz Transverter - GW3XYW 144 MHz - 28 MHz Receive Converter - VK3ABP Front-End Converter for DCR - G3VA Meteror-Scatter Audio Upconverter - LA8AK WARC Bands Receive Converter - LA8AK 1.3 GHz to 144 MHz Transverter - GM4PLM 30 MHz - 300 MHz IQ Upconverter - G4JNT 50 MHz - 2500 MHz IQ Upconverter - G4JNT 50 MHz to 28 MHz RX Converter - PA0WFO 144 MHz Direct Upconvertion - G4DDK AD8348 IQ Direct Downconverter Combined Mixer Converter SSB via Light Transverter - G8CYW 144 MHz to 28 MHz Mini-Transverter - DJ8ES 2.4 GHz ATV Downconverter - IK8UIF 5.7 GHz ATV Downconverter - IK8UIF 800-1700 MHz to 200 MHz Receive Converter 2 kHz-700 kHz to 22 MHz UpConverter - DJ8IL 10GHz-LNB-out to 144 MHz Converter - DF2FQ
RF Power Amplifiers	Low Noise Amplifiers
HF 10W Power Amplifier 50MHz 100W Power Amplifier 50MHz 350W Power Amplifier 2xBLX15 3 MHz to 30 MHz 80W Power Amplifier 144 MHz 125W Power Amplifier HF 60W Power Amplifier IRF840 HF 10W to 200W Class E/F Power Amplifier 14 MHz 20W Linear Power Amplifier 144 MHz 100W Power Amplifier 144 MHz 180W Power Amplifier 432 MHz 50W Power Amplifier 432 MHz 110W Power Amplifier 144 MHz 75W PA with RX preamplifier 144 MHz 110W Linear PA 28 MHz 150W Power Amplifier 144 MHz 200W PA with RX preamplifier HF PA's with MOSFETs - DK7ZB 50 MHz 35W PA with MOSFET - DJ9FG HF 40W PA with MOSFET - WA2EBY 88-108 MHz 40W FM Power Amplifier 144 MHz 100W Push-Pull PA - YU1AW UHF 25W Power Amplifier VHF 30W Power Amplifier HF 10W MOSFET PA - LU8EHA HF 8W Power Amplifier - F6BQU 80m 5W Power Amplifier - S57NAN 2304 MHz 2.5W Power Amplifier - WA3JUF 50 MHz 350W Power Amplifier - 2xBLX15 3.4 GHz 3W Power Amplifier - DB6NT 3.4 GHz 7W Power Amplifier - DB6NT 10 GHz 4W Power Amplifier - DB6NT 1296 MHz 50W Power Amplifier - DJ1EE 70 MHz 160W Power Amplifier - GI0GDP 144 MHz 160W Power Amplifier 144 MHz 100W Linear Power Amplifier HF 7W Power Amplifier - ON6MU 50 MHz 150W Power Amplifier 1xBLX15 144 MHz 100W Power Amplifier 2xBLY94 40m 10W Power Amplifier - PY2MG 80m/40m 30W Power Amplifier - PY2MG 1.6 MHz - 30 MHz 300W Power Amplifier 2xBLF177 14 MHz 25W 2x MOSFET Power Amplifier - F6BCU 28 MHz 80W SSB Power Amplifier BLF246 88 MHz - 108 MHz 15W FM MOSFET Power Amplifier 100 MHz - 450 MHz 250W Power Amplifier BLF548 27 MHz 1kW Low Cost MOSFET Power Amplifier 27 MHz 500W Class-E MOSFET Power Amplifier 50 MHz 300W Linear MOSFET Power Amplifier 88 MHz - 108 MHz 300W MOSFET Power Amplifier 144 MHz 50W Power Amplifier - M0UKD 2.3 GHz 1.5W Power Amplifier - F1JGP 2.3 GHz 4W Power Amplifier - F5EFD 2.3 GHz 10W Power Amplifier - F1JGP 5.7 GHz 0.5W Power Amplifier - F1HPR 5.7 GHz 4W Power Amplifier - F1JGP 10 GHz 1W Power Amplifier - F1JGP 24 GHz 80mW Power Amplifier - F1GHB 1.3 GHz 1W Power Amplifier - IW2BC HF 600W MOSFET Power Amplifier HF 180W Power Amplifier 1 MHz to 30 MHz 5W Power Amplifier 1.8 MHz to 30 MHz 15W Power Amplifier - W8DIZ 10 MHz to 90 MHz 1kW MOSFET Power Amplifier 225 MHZ 450 MHz 10W Power Amplifier 70 MHz 150W Power Amplifier - YU1AW 135 MHz - 175 MHz 7W Power Amplifier 135 MHz - 175 MHz 15W Power Amplifier 400 MHz - 520 MHz 8W Power Amplifier 1.78 GHz Class-F Power Amplifier 1 GHz Inverse-Class-F Power Amplifier 13.56 MHz 400W Class-E Power Amplifier 27 MHz 500W Class-E Power Amplifier 144 MHz 55W Class-E Power Amplifier Cascode CMOS Class-E Power Amplifiers Class-F LDMOS Power Amplifier Equivalent Circuits Class-E PA VHF Class-E Power Amplifier 2 MHz - 50 MHz 1kW MOSFET PAs 30 MHz 300W MOSFET Power Amplifier VHF 150W MOSFET Power Amplifier VHF-UHF Broadband 100W Power Amplifier VHF 80W FM Power Amplifier HF 10W Power Amplifier - KD1JV 1 MHz - 30 MHz 150W Linear Power Amplifier 28 MHz 100W Linear Power Amplifier 7 MHz 200W Class E/F MOSFET PA - KN6EK HF 30W Class-D Linear Power Amplifier - OH2GF 1450 MHz - 1550 MHz 45W LDMOS Power Amplifier HF Solid-State QRP Power Amplifiers HF 250W LDMOS Power Amplifier 1.8MHz to 10.1MHz 5W MOSFET Power Amplifier 50MHZ 16W MOSFET Power Amplifier 88 MHz - 108 MHz 175W Power Amplifier HF 100W Power Amplifier - IRF520 80m 8W Linear PA - YC3LSB 27 MHz 4W Power Amplifier 1.8 MHz to 30 MHz 10W with IRF510 Power Amplifier 1.8 MHz to 30 MHz 10W MOSFET Power Amplifier 2.4 GHz 0.5W GaAs FET Power Amplifier 432 MHz 40W DMOS Push-Pull Power Amplifier 432 MHz 125W DMOS Push-Pull Power Amplifier 500 MHz 15W DMOS Power Amplifier VHF 150W DMOS Power Amplifier VHF 300W DMOS Push-Pull Power Amplifier 14 MHz 100W 2SK413-MOSFET PA - RSGB HF 150W MOS-IRF510 Power Amplifier - UA1ZH 120 MHz to 180 MHz Class-E Power Amplifier 225 MHz to 400 MHz 20W LDMOS Power Amplifier 480 MHz to 520 MHz Class-E Power Amplifier 500 MHz Class-F Power Amplifier 1.2 GHz 10W 2nd Harmonic Resonator Power Amplifier 1.78 GHz 10W LDMOS Power Amplifier 14 MHz 100W HEXFET Class-E Power Amplifier Current-Switching Class-D LDMOS Power Amplifier 50 MHz 40W MOSFET Power Amplifier - DJ9FG 1.8 MHz - 30 MHz 250W IRF820 Power Amplifier - DK6AE 2.4 GHz 2W Power Amplifier - DG0OPK 1.8 MHz - 54 MHz 6W Power Amplifier - DL2EWN 1.8 MHz - 54 MHz 400W MOS Power Amplifier - OE2KHM 432 MHz 15W Power Amplifier - DJ1EE 1296 MHz 1W Linear PA - DC0DA 1.3 GHz 10W Linear PA - DJ1EE 1 MHz to 30 MHz 4W Linear PA - DJ7VY 2.4 GHz 1W Linear PA - DC3QS 1296 MHz 10W Linear Power Amplifier - DJ1EE 1.3 GHz 0.5W Power Amplifier - DC1OP 3.4 GHz 0.5W Power Amplifier - DC8NR 10 GHz 1W Power Amplifier - DL1RQ 24 GHz 200mW Power Amplifier - DB6NT 1 MHz to 60 MHz +23dBm Driver DK4KU HF 50W MOS Power Amplifier - W6JL HF 50W Gain=13dB Power Amplifier - WA2EUJ HF 50W 2xIRF520 Power Amplifier - NM0S 144 MHz 50W Parallel-BJT Power Amplifier 28 MHz 15W Power Amplifier 40m 75W CW Power Amplifier - W6EI 40m 200W CW Power Amplifier - W6EI 10m 10W SSB Power Amplifier - NZ5G 40m QSK 40W Power Amplifier - N5HNN 144 MHz 25W Power Amplifier - WA1GPO 7 MHz 30W HEXFET Power Amplifier 14 MHz - 21 MHz 5W HEXFET Power Amplifier HF 30W FET Push-Pull Power Amplifier - AA3X 50 MHz 3W Power Amplifier 1.8 MHz to 30 MHz 30W MOS Power Amplifier - DL2EWN 1.3 GHz 45W Power Amplifier - G8ATD 3 MHz to 30 MHz 2W QRP Power Amplifier 10 GHz 2W Power Amplifier - W1RIL 144 MHz 25W FM Power Amplifier 448 MHz 5W Power Amplifier - WA1HVG MW 20W AM Power Amplifier - DK1KQ VHF 50W FM Power Amplifier 1.8 MHz to 18 MHz 5W Power Amplifier 30 MHz 100W MOSFET Power Amplifier 136 kHz 250W Power Amplifier - G0MRF 175 MHz 15W MOSFET Power Amplifier 520 MHz 15W MOSFET Power Amplifier 40m 5W MOSFET Power Amplifier - WB8VGE 440 MHz 60W Power Amplifier - W2GEF Broadcast FM 80W Power Amplifier 1.3 GHz 30W Power Amplifier - F4CIB 50 MHz 16W Power Amplifier IRF610 HF 100W Cheap MOSFET Power Amplifier - G0MRF HF Low and Medium Power Amplifiers 10 GHz 1W Power Amplifier - IW9ARO 144 MHz 350W SD1477 Power Amplifier 27 MHz 400W MOSFET Power Amplifier VHF 300W MRF151G Power Amplifier 88 MHz - 108 MHz 1W FM Power Amplifier HF 15W MOSFET Power Amplifier - F5VOA HF 300W VRF151 MOSFET Power Amplifier 144 MHz 150W Power Amplifier and LNA SRF3417 HF 10W Power Amplifier - DL6GL HF 25W Power Amplifier IRF830 - VU3VJY HF 25W Power Amplifier IRF840 - VU3NSH HF 50W Power Amplifier IRF840 - VU3NSH 80m - 30m 400W MOSFET Power Amplifier - W5JGV 2m 90W Linear Power Amplifier TONO 2m 100W Linear Power Amplifier - K3HPA 2m 100W Linear Power Amplifier Zetagi-B300P 2m 100W Linear Power Amplifier Zetagi-LA1080 10 GHz 200mW Power Amplifier - DB6NT 100W Broadband Power Amplifier 144 MHz 30W Power Amplifier HL-37Vsx 144 MHz 150W SSB Power Amplifier MRF247 144 MHz 300W Power Amplifier - ON4KHG UHF 50W Power Amplifier RD70HVF1 VHF 70W Power Amplifier RD70HVF1 2.3 GHz 20W GaAs Power Amplifier - DJ9BV 2.3 GHz 90W Power Amplifier RF3933 2.4 GHz Power Amplifier - KK7B 3 MHz - 30 MHz 500W Power Amplifier MRF154 70 MHz 150W BLF147 Power Amplifier - YU1AW 200W DVB Power Amplifier and Bias BLF578 432 MHz 12W Power Amplifier RFM12U7X HF 200W MOSFET Power Amplifier MRF151G 1.6 MHz 30 MHz 20W MRF475 Power Amplifier 30 MHz to 150 MHz 30W MOS Power Amplifier 70 MHz 15W Power Amplifier - YO2LGX 140 MHz to 152 MHz 90W Power Amplifier KL144 23cm 35W Power Amplifier - W3HQT HF 600W MOSFET Power Amplifier - K0GKD 2 MHz to 30 MHz 30W IRF510 Power Amplifier DVB-T 200W Power Amplifier BLF578 88 MHz to 108 MHz 15W 2SC1972 Power Amplifier 7 MHz 10W Impedance Transformers Power Amplifier 5.5 GHz 2.5W MESFET Power Amplifier 40m-20m 25W Power Amplifier - W7ZOI 160m-80m 7W Push-Pull Power Amplifier - W7ZOI HF 6W Power Amplifier - W7ZOI HF 15W Linear Power Amplifier - W7ZOI HF 15W Power Amplifier with MRF449 - W7ZOI 3 MHz to 30 MHz 10W 2SC2509 Power Amplifier 3 MHz to 30 MHz 25W 2SC1945 Power Amplifier 3 MHz to 30 MHz 300W MRF454 Linear Power Amplifier 3 MHz to 30 MHz 600W MRF150 Linear Power Amplifier 136 kHz 200W Class-D STW60NE10 Power Amplifier 136 kHz 200W Envelope Modulated Power Amplifier - M0BMU 144 MHz 400W D1030UK Power Amplifier - DJ1EE 500 kHz 500W Class-E IRFP452 Power Amplifier - G4JNT 1296 MHz 50W UPF1060 Power Amplifier - DJ1EE 3 MHz to 30 MHz 50W Power Amplifier - WA2EBY 7 MHz - 14 MHz 1.5W Power Amplifier - W1FB 144 MHz 50W BLY90 Linear Power Amplifier 144 MHz 100W 2N5591 Power Amplifier - I1RK 144 MHz 140W BM170 Power Amplifier 1.8 MHz to 52 MHz 50W PD55035 Power Amplifier - DL2EWN 50 MHz 20W Power Amplifier - KC1V AM 70W BUZ71 Power Amplifier 7 MHz 60W Class-B MOSFET Power Amplifier - W1FB HF 10W MRF475 Power Amplifier - W1FB 80m 30W IRF511 Power Amplifier VHF 900W Power Amplifier ARF476L 144 MHz 13W Power Amplifier - W1OOP 144 MHz 20mW-9W Power Amplifier - WA7KRE 175 MHz 25W Power Amplifier - WA7KRE 300 MHz 2.5W Complementary Power Amplifier - WA7KRE VHF One-BJT Power Amplifiers - WA7KRE 144 MHz 10W Power Amplifier - K1AOB 144 MHz 12W Power Amplifier - W6AJF 80m-40m 2W Power Amplifier - W3QBO 80m 1.5W Power Amplifier - VE6ABX 80m 10W Power Amplifier - VE6ABX 144 MHz 10W Power Amplifier - W4CGC 144 MHz 35W Power Amplifier - W4CGC 144 MHz 80W Power Amplifier 2N6084 220 MHz 10W Power Amplifier - K7JUE 3 MHz to 30 MHz 320W Power Amplifier 80m-40m 35W Class-D Power Amplifier - WB8LOK 432 MHz 10W Linear Power Amplifier - WB6QXF 432 MHz 100W Linear Power Amplifier - WA7CNP 3 MHz - 30 MHz 25W Power Amplifier BLY89 - DJ2LR 144 MHz 70W Power Amplifier RD70HVF1 144 MHz 60W MOSFET DV120T Power Amplifier - DL4VJ 144 MHz 60W MOSFET Power Amplifier - DL4VJ 144 MHz 100W MOSFET Push-Pull Power Amplifier - DL4VJ 144 MHz - 432 MHz 5W Power Amplifier - W1JR 220 MHz 100W MOSFET Push-Pull Power Amplifier - DL4VJ 3456 MHz 0.5W Power Amplifier - WA3JUF 1.8 MHz - 10.1 MHz 25W MOSFET Power Amplifier - W1FB HF 10W Push-Pull Power Amplifiers - W1FB 1.8 MHz - 18 MHz 5W BD139 Power Amplifier - W8DIZ 10 GHz 1W SSB Power Amplifier - IW9ARO 1240 MHz 0.5W Amplifier - I1KFH 1.6 MHz - 30 MHz 100W Power Amplifier RD100HHF1 1 MHz - 100 MHz 35W Power Amplifier - UT2FW 70 MHz 50W RD70HVF1 Power Amplifier - SP2DMB HF 20W 2SC1969 Power Amplifier - M0DGQ HF 20W RD16HHF1 Power Amplifier - G6LBQ HF 20W RD16HHF1 Power Amplifier - K5BCQ HF 25W IRF510 Power Amplifier - ON6MU 1.6 MHz to 54 MHz Linear MOSFET SD2933 Power Amplifier 2.5 GHz - 2.7 GHz MESFET Power Amplifier HF 10W RD06HVF1 Power Amplifier 420 MHz - 450 MHz 100W Push-Push Power Amplifier 2.4 GHz 26dBm BFP490 Power Amplifier 40m 5W Power Amplifier BD139 - VU2JMX HF 300W Power Amplifier BLX15 VU2JMX 3 MHz - 30 MHz 10W 2SC1971 Power Amplifier 7 MHz 2W CW Power Amplifier IRF510 - PA3FYM 1.9 MHz - 30 MHz 100W Power Amplifier FT-757 1.9 MHz - 30MHz 100W Power Amplifier IC-756 3 MHz - 30 MHz 100W Power Amplifier 2SC2290 1 MHz - 30 MHz 15W BJTs Power Amplifier 3.5 MHz 8W Power Amplifier 2xIRF510 - F6BQU 160m- 80m- 40m 300W IRF150 Power Amplifier - YB0BAJ HF Broadband 7W Power Amplifier 1 MHz to 100 MHz 10W Power Amplifier 3.5 MHz to 14MHz 8W Power Amplifier IRF511 14 MHz 10W Power Amplifier - LZ1DPN 40m 50W 2 x IRF510 Power Amplifier - AC2CZ 70 MHz 10W SSB Power Amplifier SD1143 HF 12W Power Amplifier X108G HF 30W MOSFET Power Amplifier - OH7SV HF 50W MOSFET Power Amplifier - OH7SV 27 MHz 1kW Power Amplifier ARF446-ARF447 30m 200W Power Amplifier IRFP440 - KF6NNZ 136 kHz 400W Power Amplifier HUF75345G3 - G3YXM 144 MHz 20W FM Power Amplifier - F6HMT 144 MHz 40W FM Power Amplifier VHF40 HF 1W Class-A Power Amplifier - ZL1WTT HF 10W Push-Pull IRF510 Power Amplifier VHF 10W FM Power Amplifier VHF 25W SSB Power Amplifier 1.8 MHz - 7 MHz 25W MOSFET Power Amplifier - VK3XU 7 MHz 5W SSB Power Amplifier - G4BWE 80m,40m,20m 30W SSB Power Amplifier - F8BCU 144 MHz 30W SSB Power Amplifier MRF238 HF 1.5W SSB Power Amplifier - F8BCU HF 2W CW Power Amplifier - FE6BCU 14 MHz 8W CW Power Amplifier - W1CER 7 MHz 3W CW Power Amplifier - G3RJV 40m 50W IRF510 Power Amplifier - G0KLA 146 MHz 25W FM Power Amplifier - K7QWR 146 MHz 50W FM Power Amplifier - K7QWR HF 100W Power Amplifier - G4AMW 1.8 MHz to 30 MHz 25W SSB Power Amplifier - W6FIG 3.5 MHz 10W CW Power Amplifier - W1CER 10 MHz to 600 MHz 120W Power Amplifier BLF645 40m-20m 15W CW Power Amplifier - W1FB 50 MHz to 100 MHz Power Amplifier S175-28 432 MHz 15W Power Amplifier - WA7CNP 432 MHz 60W Power Amplifier - K2OVS HF Broadband 1.5W SSB Power Amplifier 80m to 20m 8W CW Power Amplifier - W1FB 3.5 MHz 30W IRF511 Power Amplifier - AA3X 3.5 MHz 50W MOSFET Power Amplifier - G3IPV 3 MHz - 30 MHz 25W Linear Power Amplifier SLAM-0111 10 GHz 1W Power Amplifier - G3WDG 14 MHz 15W MOSFET Power Amplifier - G4BWE 15W SSB Power Amplifier - KH6CP 20m 400W ARF440 CW Power Amplifier 70 MHz 200W Power Amplifier SD1407 - G0MRF HF 100W 2SK413 Power Amplifier - G0MRF HF 140W Linear Power Amplifier - G3TSO Multiband 5W SSB Power Amplifier - G3TDZ 1.8 MHz - 30 MHz 100W Power Amplifier 2SC2290 50 MHz 100W BLW96 Power Amplifier - G3WZT 70 MHz 10W Linear Power Amplifier - G3VA 144 MHz 10W FET Power Amplifier - G6JP HF 80W Linear Power Amplifier - G3BAC 1.5 MHz - 50 MHz 30W RD16HHF Power Amplifier - EI9GQ 1.8 MHz - 10.1 MHz 6W IRF510 Power Amplifier - VK2XU 1.9 MHz 10W MOSFET Power Amplifier - G4JNT 3.5 MHz Stable FET Power Amplifier - G3IPV 5 MHz 25W MRF137 Power Amplifier - GB3RAL 18 MHz 5W CW Power Amplifier - G4COL 18 MHz 20W CW MOSFET Power Amplifier - G4COL 40m-80m 5W Power Amplifier MRF475 - G3VA 50 MHz 16W IRF610 Power Amplifier - PA0KSB 50 MHz 25W VMOSFET Power Amplifier - DJ9FG 50 MHz 50W VMOSFET Power Amplifier - DJ9FG 70 MHz 50W Power Amplifier for Handhelds - GI0GDP 144 MHz 75W Power Amplifier - G3WZT 144 MHz 100W MRF174 Power Amplifier - F6ETI HF 1W Broadband Power Amplifier HF 12W Negative Feedback Power Amplifier - W1FB HF 15W Broadband Power Amplifier - G4JNT HF 400W SD2931 Power Amplifier LF 181 kHz 100W Power Amplifier - ZL4OL 1.8 MHz to 50 MHz 50W MRF148 Power Amplifier - DJ1MR 50 MHz 10W SSB Power Amplifier - WB2TMB 50 MHz 25W CW Power Amplifier - KC1V 144 MHz 10W Power Amplifier VB-2300 144 MHz 25W Power Amplifier VB-2530 HF 1kW VRF3933 Power Amplifier - DJ1MR HF 100W Power Amplifier MRF255 FT-920 VHF 300W Power Amplifier IDM175CW300 1.8 MHz - 30 MHz 5W Power Amplifiers - W8DIZ 2m 80W Power Amplifier S-AV36 3 MHz - 30 MHz 30W IRF530 Power Amplifier - PA0FRI 3 MHz - 30 MHz 45W SSB Power Amplifier IRF530 - YT2FSG 40m 10W IRF530 Power Amplifier KN-Q7A 70 MHz 10W Power Amplifier SD1143 1.5 MHz - 50 MHz 100W SD1446 Power Amplifier - OE2KHM 1.8 MHz - 30 MHz 5W 1x IRF510 - G0UPL 1.8 MHz - 30 MHz 10W 2x IRF510 - G0UPL 1.8 MHz - 30MHz 10W RD16HHF1 Power Amplifier - SP2DMB 1.8 MHz - 54 MHz 5W 1x RD16HHF1 Power Amplifier 1.8 MHz - 54 MHz 100W 1x MRF101A Power Amplifier 1.8MHz - 54 MHz 100W 2x MRF101A Power Amplifier 1.8 MHz - 54 MHz 700W 2x VRF2933 Power Amplifier 1.8MHz - 55 MHz Class-AB MOSFET Power Amplifier 40.68 MHz Class-E MRF101 Power Amplifier 130 MHz - 160 MHz 15W FM Power Amplifier - F3TA 144 MHz 12W 2N3632 Power Amplifier 144 MHz 25W 2x2N3632 Power Amplifier 400 kHz - 60 MHz 5W Power Amplifier - DJ0ABR 1296 MHz 13W Power Amplifier - DL2EWN HF 10W Power Amplifier RD16HHF - DK1HE HF 20W 2x RD16HHF Power Amplifier - TF3LJ HF - 50 MHz 600W Power Amplifier MRF300 - YO9IRF HF 20W Power Amplifier 2x RD16HHF - DK1HE	2.4 GHz LNA 30dB-Gain 0.6dB-NF 10 GHz Low Noise Amplifier 144 MHz GaAs LNA 144 MHz LNA - YU1AW 432 MHz LNA MGF1402 432 MHz LNA - YU1AW 950 MHz to 2150 MHz LNA 1296 MHz Low Noise Amplifier Antenna Preamplifier 100 kHz to 220 MHz UHF TV Preamplifier 25dB Gain LNA for UHF Band BFP540 High IP3 HF LNA L-band Low Noise Amplifier 950 MHz - 2150 MHz LNB HF Preselector - DL2JDN 3.5 GHz PHEMT LNA 0.9dB NF 10 GHz GaAs LNA - N1BWT 24 GHz HEMT LNA - WA3RMX 432 MHz GaAs LNA - N6CA 1.3 GHz LNA - PE1BVJ 2.4 GHz LNA +40dBm OIP3 100 MHz to 500 MHz LNA 800 MHz to 1000 MHz BJT LNA 900 MHz BJT LNA 900 MHz High Linearity pHEMT LNA 2.4 GHz LNA, 1.1dB-NF, +10dBm-IP3 2.4 GHz LNA 0.6dB-NF, 15dB-Gain 5.7 GHz LNA 1.2dB-NF, 15dB-Gain 50 MHz Low Noise FET Preamplifier - W1FB 432 MHz pHEMT LNA 0.4dB-NF - JH0WJF HF High Dynamic Range LNA VHF-UHF GaAs LNA - W3KKC 88MHz-108MHz Cascode LNA Short-Wave Tunable Preamplifier 2.4 GHz 0.5dB-NF pHEMT LNA 400 MHz LNA BFG540 Wideband 432 MHz to 1296MHz pHEMT LNA - G0MRF 900 MHz LNA BFG505 Wideband pHEMT LNA - W6PQL 1296 MHz Very Low Noise Amplifier - G4DDK 2304 MHz Very Low Noise Amplifier - G4DDK 1296 MHz BJT Low Noise Amplifier - WA6UAM 2.4 GHz LNA - F5JGP 1296 MHz LNA - F1JGP 70 MHz to 560 MHz Wideband High-Dynamic-Range LNA 100 kHz to 600 MHz Wideband Linear Amplifier HF Receive Loop Antenna Preamplifier 1 MHz to 100 MHz Dual-Stage LNA 40 MHz to 800 MHz Gain=28dB LNA 144 MHz BF981 LNA 144 MHz Tuned LNA 400 MHz to 800 MHz Gain=30dB LNA All-Bands Preselector 1.3 GHz GaAs-FET Low Noise Preamplifier - OH3MCK GPS 1.575 GHz, G=18dB, NF=1.3dB LNA 2140 MHz G=15dB, NF=1.5dB GaAs LNA 1 MHz - 30 MHz Ultra High Dynamic Range LNA - YU1AW 2.4 GHz two-LNA's for Active Antenna 10.24 GHz GaAs LNA's 900 MHz G=22dB, NF=1.9dB, BJT LNA 50 MHz Dual-Gate LNA - OH2AUE 1.5 MHz - 50 MHz LNA+PA - YU1LM 900 MHz Integrated Cascode LNA 2.4 GHz, NF=1.5dB, G=14dB, HJ-FET LNA L-Band pHEMT LNA Voltage Probe Antenna Preamplifier - VE7BPO High-Dynamic Range Preamplifier - G3SBI 1.8 MHz to 54 MHz Preselector MFJ-1040 Medium Wave Active Antenna 10 kHz - 30 MHz Antenna Preamplifier HF Active Loop Antenna 1 GHz to 8 GHz Cascode LNA 2 GHz LNA with Tunable Image Reject Filter 7 GHz Low Noise Amplifier 40 MHz to 800 MHz CATV LNA CATV Line-out Amplifier VHF Active Antenna Broadband J-FET Differential Amplifier 144 MHz MOS and FET Equiv LNA - RSGB FET-BJT Cascode LNA High-IP3 HF LNA - RSGB 50 MHz BFPxxx LNA - YU1AW 70 MHz BFPxxx LNA - YU1AW 144 MHz BFPxxx LNA - YU1AW 144 MHz Dual-Gate LNA - YU1AW 432 MHz Dual-Gate LNA - YU1AW 1 kHz to 12 GHz Wideband LNA Push-Pull HF Active Antenna Circuit - DJ2LR 88 MHz - 108 MHz FM-band Low Noise Amplifier 1.3 GHz LNA 7 MHz Multi-Q Preselector - DK2AG 144MHz - 432 MHz LNA - DH7FB High-IP3 Differential LNA - DL7VFS Long Waves Preselector - DL6UU 1296 MHz LNA - DJ1EE 3-stages 1296 MHz LNA - DC0DA 144 MHz & 432 MHz High Linearity LNA - DJ7VY 1.3 GHz 0.25dB-NF 16dB-Gain LNA - DF7KB 1.7 GHz 1dB-NF 14dB-Gain LNA - DJ6PI 1.7 GHz 2dB-NF 23dB-Gain LNA - DJ6PI 23cm and 13cm Dual-Stage LNA - DJ6PI 144 MHz 0.5dB-NF LNA - DF9RL 144 MHz High-Gain LNA with PIN-attenuator - DK1OF 432 MHz 0.7dB-NF LNA 432 MHz Dual-Gate LNA - DF7KB 1296 MHz Selective LNA - DC8UG 144 MHz, 220 MHz, 440 MHz LNA - W3KKC 1.5 GHz LNA - YT3MV 1.150 GHz Coaxial Resonator LNA - DB1NV 5.76 GHz Gain-50dB Amplifier - DL1RQ 100 kHz to 50 MHz Active Antenna 144 MHz Dual-Gate LNA 144 MHz Helical LNA - YU1AW C-Band GaAs LNA - YT3MV HF Preselector - DF4UW HF to VHF Active Antenna Push-Pull LNAs - DF8FR UHF Dual-Gate LNA VLF to VHF Active Antenna - DB1NV Wide Band Amplifiers Active Patch Antenna for GPS 2.3 GHz 0.3dB-NF LNA - WD5AGO L-band Dual-GaAs FET 0.4dB-NF LNA - WD5AGO L-band Dual-Stage 0.3dB-NF LNA - WD5AGO 30 MHz to 3400 MHz LNA - G4DDK 144 MHz - 222 MHz - 432 MHz GaAs LNA - WA5VJB 144 MHz - 222 MHz Power GaAs LNA - WA5VJB 902 MHz - 1296MHz - 2304 MHz GaAs LNA - WA5VJB 144 MHz LNA - AA4AW Noise Reduction Active Antennas - WD4PLI Regenerative LNA for Loop Antenna - W2IMB 10 GHz, G=18dB, NF=2dB, LNA - WB6IGP 144 MHz Differential FET LNA - W4KAE 144 MHz LNA - K6MVH 220MHz Dual-Gate MOSFET LNA - K1CLL Very Low Frequency Preamplifier - WB6IGP 50 Hz to 100 MHz Wideband Preamp - NZ9A 5MHz IF Amplifier with 50dB Gain-Control 14 MHz High-IP3 LNA Engelbrecht Balanced IF Amplifier Gain Controlled RF Amplifier High Performance Post-Mixer Amplifier Two-Stage Norton Amplifier Variable Gain IF Amplifiers JFET LNA / Attenuator 23cm, 13cm, 9cm Very Low Noise Amplifier - G4DDK Broadband Amplifier with Constant Current Source Wideband Scanner Active Antenna 9 MHz High-IP3 Quad-JFET Amplifier - PA3AKE 455 kHz / 10.7 MHz IF-Amplifier with MC1350 HF High-IP3 LNA - UR3IQO 434 MHz GaAs LNA - DJ5QX 800 MHz - 900 MHz LNA 80m-40m Innovative Active Antenna - W2EEY SiGe MMIC LNA VHF LNA - WA4WDK 0.5 MHz to 50 MHz High-IP3 FET LNA - DC4KU 10 MHz to 220 MHz High-IP3 Norton LNA - DC4KU 50 MHz High-IP3 LNA - N6CA Multiband JFET LNA - N6CA Loop Antenna Differential FET LNA Loop Antenna Push-Pull FET LNA Loop Antenna Wideband LNA 144 MHz Hybrid LNA - W6IOJ 144 MHz Portable LNA S-Band Ultra Low Noise Amplifier 10m Preamp - W3HUC 144 MHz / 432 MHz GaAs LNA - OZ1PIF 1296 MHz GaAs LNA - RA3WDK HF High-IP3 Push-Pull LNA - WN5Y High-IP3 Push-Pull LNA with 2N5109 Low-Band High-IP3 LNA - W7IUV 20 MHz to 30 MHz LNA - OZ2OE 144 MHz BF981 LNA - OZ2OE 144 MHz GaAs LNA - ON4KHG 432 MHz GaAs LNA - OZ2OE 1296 MHz GaAs LNA - OZ2OE 15 MHz to 30 MHz Linear Amplifier 10 GHz LNA - G3WDG High IP3 Power-MOSFET LNA VLF Tuner and Preamplifier 2.4 GHz NF-0.7dB NE34018 LNA 23cm, 13cm, 9cm Very Low Noise Amplifier - G4DDK 432 MHz LNA AF239 200MHz JFET Cascode AGC Amplifier HF Whip Antenna Preamplifier - KK6IL HF Tuned MOSFET Preselector HF JFET Differential Preamp IC-781 3 MHz to 30 MHz Feedback LNA HF 40dBm IP3 LNA UHF Narrowband Gain-18dB LNA VHF Gain-20dB Dual-Gate LNA VHF Gain-30dB Cascode LNA VHF Wideband Gain-15dB LNA 145 MHz Tunnel Diode LNA Ku-Band LNA NF-1.2dB BFU730 20 MHz to 80 MHz High-IIP3 Norton LNA 4m LNA - M0DGQ HF Preamp with ON-OFF 13 MHz to 30 MHz BF244 LNA 70 MHz BF244 LNA 144 MHz LNA 40673 All HF Bands Preselector FM Band Booster LNA 144 MHz Contest LNA - HA8ET 432 MHz Contest LNA - HA8ET 144 MHz, 220 MHz, 432 MHz GaAs LNA - WA2GFP 160m Loop Antenna Receive Amplifier - W9SR HF High Dynamic Range Amplifier for Portable Antenna 440 MHz JFET Preamp High IP3 Post-Mixer Amplifiers - W7ZOI 160m Preamp 3SK88 - KD9SV 13cm GaAs NE42484 LNA - DJ9BV 136 kHz LNA - G3YXM 136 kHz Tuned LNA 144 MHz-432 MHz GaAs 3SK97 LNA 1296 MHz Switchable LNA - G4DDK 500 Hz to 500 kHz Ultra Low Noise JFET Amplifier Loop Antenna Differential Amplifier 144 MHz BJT MRF901 LNA - W6IOJ Broadband HF Amplifier - W1FB Differential IF Amplifier BFR96 High IP3 Norton LNA - AG4R 9 MHz IF-Amplifier 32dBm-IP3 - N6NWP HF Push-Pull LNA - N6NWP 144 MHz GaAs LNA MGF1502 UHF Push-Pull LNA NE02135 Wideband High-IP3 Push-Pull LNA ASL552 23cm LNA - PE1PZN Low Voltage HF Active Antenna Preamp UHF LNA with BFG65 144 MHz Germanium BJT LNA 144 MHz FET LNA - K6HCP 432 MHz FET LNA - W1DTY 0.5 MHz to 40 MHz Narrowband Preselector - W5OZF 50 MHz - 144 MHz Printed Band Pass LNA - W5KHT 1296 MHz LNA - WA2VTR 21 MHz Emitter Tuned LNA - WA5SNZ 80m Selective Preselector - WA7BPO 144 MHz Cascode FET LNA - WA2GCF 144 MHz Cooled FET LNA - WA0RDX 2304 MHz LNA - VA3VTR VHF FET Preselector - K6BIJ 50 MHz - 144 MHz Cascode FET LNA - WA2GCF Broadband Amplifiers MC1590G - W6GXN VHF Two FETs Tunable LNA - WA9RAQ VHF Feedback LNA - W1OOP 144 MHz MOSFET LNA - W8BBB 2304 MHz LNA - WA9HUV 2304 MHz Narrowband LNA - WA9HUV High Selectivity Dual-FET LNA 28 MHz MOSFET LNA - W1JAA High IP3 Push-Pull LNA - DJ2LR UHF LNA FMT4575 - W1JAA UHF Preamp J308 - WA2GCF 60 kHz Loop Antenna Preamp - W9BTI HF Linear Oscillator Buffer - VK2ZTB 144 MHz Feedback JFET LNA - DJ2LR 0 - 50 MHz High Sensitivity Preamp - W1CFI 28 MHz LNA - W1HR 432 MHz GaAs LNA - JH1BRY 432 MHz LNA MA42141 - K1RX 432 MHz LNA NE64535 - WB5LUA High Performance RF AGC Amplifier - WA1FRJ 1.3 GHz GaAs LNA MGF1400 - DJ9HO 1.8 MHz Active Loop Antenna - G3OUC 144 MHz GaAs LNA - JH1BRY 144 MHz - 220 MHz - 432 MHz LNA NEC4535 - WA2GFP HF Differential Active Loop Antenna - G4UAZ VLF Protected Preamp Wideband JFETs LNAs - N6DC 9 MHz IF Amplifier - DJ2LR 75 MHz IF Amplifier - DJ2LR 150 MHz to 250 MHz LNA BFR96 200 MHz to 400 MHz Variable Gain LNA - W1OOP 432 MHz LNA - W1OOP 470 kHz to 144 MHz High IP3 Norton LNA - DK6ED 670 MHz MOSFET-Ge LNA VHF 220 MHz LNA BFG65 VHF Cascode LNA BF255 VHF MOSFET BF981 LNA 2304 MHz LNA MGF1402 - WA2GFP 144 MHz - 432 MHz Dual-FET LNA - W1JR 0.5 MHz - 30 MHz Active Antenna - K1ZJH 6dB Lossless Feedback Amplifier - WA6CAY 10 kHz to 30 MHz High-IP3 LNA VN2222L DC to 600 MHz MMIC LNA NE5205 MMICs Placed in Parallel - W1JR VLF MOSFET LNAs Noiseless Feedback with Notch VLF-LF Noiseless Feedback LNA J310 1296 MHz GaAs LNA - WA9HUV Dual JFET IF Amplifier - K1ZJH IF Amplifier Collins IF Amplifier Electro-Mechanical Filter Collins 432 MHz GaAs LNA - WA2FTK 1.8 MHz 40dB Loop Antenna Preamp - W1FB 2.4 GHz - 3.4 GHz PHEMT LNA - WB5LUA 5.7 GHz PHEMT LNA - WB5LUA 10.3 GHz PHEMT LNA - WB5LUA 20 MHz to 190 MHz Cascode FET LNA Oscillator Buffer Amplifier - W1FB VLF Loop Antenna LNA - F6CNI VLF Loop Antenna LNA - G3LNP 30 kHz - 30 MHz High-Gain Active Antenna 100 MHz Dual-Gate BF998 LNA - VE7BPO 0.5 MHz - 145 MHZ High OIP3 LNA - DL2EWN 136 kHZ to 3.8 MHz Loop Antenna and LNA - DL2NI LNB LX-LST40 Schematic 20 kHz - 20 MHz Balanced Active RX Antenna - PA0RDT 432 MHz GaAs FET LNA - ZF5JF Branch-Line Balanced MESFET Amplifier Low Frequency Tunable Active Antenna Low Frequency Whip Active Antenna No-inductors Wideband LNA Variable Gain Amplifier 100dB Range 50 MHz - 70 MHz LNA - DL4ZAO 450 kHz to 55 MHz Flat Gain Amplifier 200 MHz Neutralized LNA 10 GHz LNA - K5TRA 25 MHz to 520 MHz Tuned LNA 122 GHz SiGe LNA HF Tuned Preselector BF981 High IP3 LNA FT-ONE 3 MHz - 100 MHz Norton LNA 1 MHz - 30 MHz Resistive Amplifier 2.4 GHz LNA Active Bias BFP420 2 GHz to 2.6 GHz PHEMT LNA 2 MHz to 50 MHz 10dB Dual-Gate MOSFET Amplifier 23cm Active Yagi Antenna 23cm Tunable GaAs LNA - PA4DAN 88 MHz - 108 MHz Antenna Booster 100 Hz - 3 MHz 30dB Amplifier HF LO Buffer Amplifier HF Loop Antenna Preamplifier - PA1M L-Band GaAs LNA 2 x MGF1302 10 MHz to 500 MHz Wideband LNA 50 MHz to 4 GHz Wideband pHEMT LNA PSA4-5043 MW-SW Antenna Preamplifier 2m Printed Inductors LNA BF981 HF Active Loop Antenna - VK2ZAY 10.7 MHz Stable MOSFET Amplifier 144 MHz LNA BF981 - F6CER Loop Antenna Receive Preamplifiers 6 Hz - 9.8 MHz Wideband Amplifier 144 MHz - 432 MHz LNA BF960 - FE6BCU 432 MHz Narrowband LNA - F8BCU 3.5 MHz to 29 MHz Tuned LNA - W1ICP 144 MHz Neutralized JFET LNA - W1KLK 800 MHz LNA BF998 HF Differential Active Antenna HF JFET LNA AGC DX-150 Loop Antenna Preamplifier - G8BUS Variable Gain Amplifier Pentode Equivalent 144 MHz Masthead Preamplifier BF981 HF High Linearity Tuned LNA Medium-Wave Loop Antenna Preamplifier Short-Wave Tuned Active Antenna - G6KSN 10m,6m,2m MOSFET LNA 432 MHz GaAs-FET LNA - WA2ZZF 1296 MHz GaAs-FET LNA - WA2ZZF Loop Antenna Preamplifier - W1YNC Small Receive Dipole Preamplifier 1 MHz - 30 MHz High-Gain Amplifier - W7ZOI Magnetic Loop Antenna PNP-NPN 10 GHz HEMT LNA - G3WDG 900 MHz - 1800 MHz GaAs LNA - YT3MV Post-Mixer High-IP3 Amplifier - G3SBI VHF Varicap Tuned LNA - GW0GHF 10 kHz - 30 MHz Active Antenna Preamps - G3VA 144 MHz MESFET LNA - F6CIA 432 MHz MESFET LNA - JA6CZD HF Loop Active Antenna - G4UAZ MW Loop Preamplifier - GI2FHN 1.3 GHz Switchable LNA - G4DDK 1.8 MHz - 60 MHz Receive Preamp - G4COL 1 MHz - 30 MHz 25dB Flat Gain Amplifier - EI9GQ 136 kHz Active Loop Antenna - G3BIK 136 kHz Receive Loop Preamp - LA8AK 136 kHz Receive Loop Preamp - M0BMU 144 MHz GaAs ATF10136 LNA Balanced Tunable Active Antenna - G3NOQ HF Active Antenna J310 - G0FUW HF High-IP3 LNA 2N5109 HF LNA - PA-Driver - G3TXQ Oscillator Buffer Amplifier Source Follower with Gain - VE6LI 1 MHz to 40 MHz JFET AGC LNA - DC4KU 30 kHz to 30 MHz LNA - HB9KOC 40.525 MHz JFET LNA - DC4KU HF Grounded Dual-Gate LNA - W1FB HF Loop Antenna LNA - DK6ED 2m - 70cm LNA SPF5122z - UR7IJM 23cm LNA PGA-103 - DL2EWN 1 MHz - 30 MHz TX Amplifier DK1HE 1 MHz - 70 MHz Variable Gain Amplifier FET-BJT 50 MHz - 4 GHz Single Combined MMIC Amplifier Dual Antenna Preamplifier - DK6ED HF MOSFET LNA - DK6ED MFJ-959 Receive Tuner Preamplifier S and L Bands GaAs LNA
Oscillators	RF Signal Sources and Multipliers
5 MHz to 5.4 MHz Variable Frequency Oscillator 6 MHz to 6.35 MHz Variable Frequency Oscillator 7 MHz to 7.3 MHz Variable Frequency Oscillator 30 MHz to 200 MHz VCO 50 MHz to 150 MHz Crystal Oscillator 50 MHz Crystal Oscillator 100 MHz Crystal Oscillator 100 MHz VCXO 455 kHz Ceramic Filter BFO Butler Crystal Oscillator Vackar VFO G3PDM High Power VFO - K7HFD Low Voltage Crystal Oscillator Parallel Mode Crystal Oscillator Series Mode Crystal Oscillator Variable Crystal Oscillator VXO 750 MHz Push-Push Oscillator Butler Overtone Crystal Oscillator High Overtone Crystal Oscillator 3 MHz to 30 MHz VCXO Low Noise Differential VFO - 5 MHz to 5.5 MHz VHF Oven Crystal Oscillator - W6PQL 1.3 GHz VCO with Emitter Noise Feedback 2 GHz to 4GHz VCO 220 MHz Low Noise Cascode Oscillator 600 MHz to 2.2GHz VCO 800 MHz to 2.2GHz Push-Pull VCO 1 GHz Differential VCO with Amplitude Control 10 MHz VXO 455 kHz Beat Frequency Oscillator Crystal Oscillators Types VXOs Types and Schematics 750 MHz to 1250 MHz VCO High Performance VHF Overtone Oscillator - GW4DGU Octave VCO with active bias 200 MHz to 400 MHz VCO 1700 MHz to 1950 MHz VCO Very Low Phase Noise Crystal Oscillator - Wenzel 1 GHz Very Low Phase Noise VCO 74 MHz to 105 MHz Low Noise VCO 100 MHz Low Phase Noise VCXO 125 MHz Very Low Phase Noise Oscillator - ADI 600 MHz to 1200 MHz Low Phase Noise VCO 18 MHz Stable and Constant Amplitude LO 1100 MHz to 1350 MHz VCO 70 MHz to 210 MHz VCO with Dual-Gate MOSFET 5 MHz to 6 MHz VFO - VE7CA 7 MHz VXO - NB6M 14 MHz VXO - NB6M 10 GHz DRO Oscillator 180 MHz X-tal Oscillator - F1ANH 5 MHz X-tal Coupled-Resonator LO 10 MHz Third-Overtone Pierce LO 10 MHz X-tal Cascode Oscillator 27 MHz Third-Overtone with TTL-output LO 40 MHz to 70 MHz VCO 42 MHz to 72 MHz VCO 100 MHz Fifth-Overtone Butler VCXO 110 MHz to 210 MHz VCO ESM500-Receiver 118 MHz to 198 MHz FM-Modulated LO 160 MHz to 260 MHz VCO ESV-Receiver 260 MHz to 520 MHz VCO HP8662A-SigGen 380 MHz to 520 MHz VCO 450 MHz Quarter-Wavelength VCO 567 MHz SAW Oscillator 800 MHz Very Low Phase Noise VCO Ceramic Resonator VCO HF Multiband VCO EK070-Receiver HF Multiband VCO ESH3-Receiver Low Phase Noise Push-Push VCO Third-Overtone VCXO with AGC 2.4 GHz to 2.8 GHz VCO 10.5 GHz DRO 102 MHz VCXO Cavity-Tuned Oscillator Butler X-tal Oscillators DC-Switched X-tal Oscillator FM-Modulated X-tal Oscillator 55.2 MHz VCXO - KA7OEI 1.93 MHz to 1.98 MHz Very Stable VFO - W8DIZ 5.05 MHz - 5.075 MHz Clapp VFO 1 MHz to 5 MHz Goral Type Oscillator 100 MHz Dual-Gate MOSFET Oscillator Triple Beat Frequency Oscillator 4.9 MHz to 5.5 MHz VFO - TS520 5.225 MHz - 5.575 MHz Franklin Stable VFO 7 MHz QSK VFO - NN1G Widerange VCXO W7ZOI 5 MHz VXO with ALC 21 MHz VCXO - G3MEV Variable Crystal Resonator Oscillator - K2BLA 1.3 GHz Low Phase Noise Cavity Stabilized VCO 6 GHz DRO 10 MHz Very Low Phase Noise X-tal Oscillator 40 MHz to 80 MHz Low Phase Noise VCO 72 MHz to 76 MHz VCO - NA5N 100 MHz Very Low Phase Noise VCXO 455 kHz PLL Variable BFO Microwave SAW VCO 3 MHz to 8 MHz VCO High Stability Time Base Oscillator WARC VFO - G3TSO 40 MHz Overtone Oscillator - PA0WSP 133.6 MHz VXO No-Tune Overtone XO - I4BER 5th Overtone X-tal Oscillator - Wenzel 10 MHz Overtone X-tal Oscillator 5.6 GHz Low Phase Noise MESFET Oscillator 11.3 GHz to14.3 GHz MESFET VCO 325 MHz to 600 MHz Balanced MOS VCO 580 MHz to 2.2 GHz VCO with Combline BPF Low Phase Noise X-tal Oscillator with ALC Low Phase Noise X-tal Oscillator Three-Band VFO 455 kHz X-tal Oscillator 855 MHz to 890 MHz Coaxial-Resonator VCO 1695 MHz to 1750 MHz Coaxial-Resonator VCO High Short-Term Stability X-tal Oscillator 23 MHz VXO - W6JFR 1 GHz - 1.5 GHz VCO - DB1NV 1 GHz - 1.6 GHz VCO - DB1NV 80 MHz - 1000 MHz Oscillator - DB1NV 150 MHz - 300 MHz VCO - DB1NV 1200 GHz Oscillator - DG4RBF 5.5 MHz to 6 MHz VCO with Divider - DK1OF 5 MHz to 6 MHz VFO - DL6HA 144 MHz 1W Power Oscillator VFX 24 MHz to 24.3 MHz - DL3WR 60 MHz to 120 MHz VCO - DL8ZX High Frequency Overtone X-tal Oscillator - DK1AG Large Short-Term Stability Oscillator - DK1AG Low Frequency X-tal Oscillator - DK1AG Temperature Compensated Oscillator - DL1XX 96 MHz Very Low Phase Noise X-tal Oscillator - DK1AG 126 MHz to 130 MHz Scanning VCO - DC3NT 135 MHz VXO 200 kHz-range - DC6HL 800 MHz VCO - DL8ZX VXO for 144 MHz Transceiver - DB3TB 7 MHz to 7.1 MHz Very Stable VFO - K6BSU 7 MHz to 7.1 MHz VFO - W1FB Ovenized Crystal Controlled Oscillator - AF8L 48 MHz to 48.7 MHz Stable VFO - DL9FX Automatic Search VCO - DL8AT 136 MHz VXO - DJ9ZR 1.3 GHz VCO 1.3 GHz VCO - DF5FC 1.5 GHz Coaxial Resonator Oscillator - DB1NV 2.1 GHz to 3.85 GHz VCO - S53MV 10 GHz FM DRO - F6IWF 24 MHz FM X-tal Oscillator 300 MHz VCO - DF5FC 400 MHz to 1900 MHz VCO - DB1NV 450 MHz to 1 GHz VCO - DB1NV 700 MHz to 1400 MHz MMIC VCO - DJ8ES 1850 MHz to 2200 MHz VCO - S53MV MMIC X-tal Oscillator - DK1AG VFO with I/Q Output 10 MHz Stable VFO 24 MHz VXO Microstrip GaAs Oscillators 9 MHz USB/LSB BFO - DC4KU 40.5 MHz, +23dBm X-tal Oscillator - DC4KU Low Phase Noise X-tal LO - Driscoll 5 MHz Very Low Phase Noise X-tal LO - Driscoll 100 MHz Very Low Phase Noise X-tal LO - Driscoll 10 MHz Cascode X-tal Oscillator 10 MHz Tank-Coupled Oscillator 15 MHz Pierce X-tal Oscillator 120 MHz Butler X-tal Oscillator 1.5 GHz to 1.9 GHz Microstrip Ring Oscillator 5th order Overtone X-tal Oscillator 6 MHz - 8 MHz VXO Crystal Oscillator 21 MHz - 105 MHz Impedance Inverting X-tal Oscillator 50 MHz - 100 MHz Overtone Crystal Oscillator 150 kHz - 550 kHz X-tal Oscillator 700 MHz Low Phase Noise Oscillator Below 150 kHz X-tal Oscillator Digital-ICs Crystal Oscillators PNP Overtone X-tal Oscillator TTL-Logic X-tal Oscillators 5.6 GHz Integrated Oscillator uStrip Antenna Stable VFO for 160m/80m - W1VD 6m VFX - K1CLL 100 MHz X-tal Oscillator - WB6IGP 200 MHz to 500 MHz Oscillator - WB6NWW 3 MHz to 4 MHz VFO - WB8VGE 20 MHz High-Stability Lumped-Line Oscillator - W6HDM 7 MHz VCO 13.5 MHz to 14 MHz VFX 14 MHz VFO with I/Q output 50.113 MHz VXO 116 MHz High Output Power Oscillator - DC8RI 5 MHz to 5.5 MHz VFO 7 MHz to 7.1 MHz VFO 1108 MHz Oscillator - K0JB 1296 MHz Oscillator - K1CLL 5th Overtone Tune X-tal Oscillator 10 MHz Low Phase Noise X-tal Oscillator - Driscoll 11.2 MHz X-tal Driscoll Oscillator - KO4BB 80 MHz X-tal Driscoll Oscillator - KO4BB 19.9 MHz VXO Low Phase Noise X-tal Oscillator - KO4BB 350 MHz to 650 MHz MMIC VCO - G8ATD Variable Controlled Crystal Oscillator - WA1HVG 100 MHz Butler X-tal Oscillator - DL1FAC 15.5 MHz to 16.1 MHz VFO 200 kHz X-tal Oscillator - W6GXN 5 MHz to 5.5 MHz VFO FT-707 5 MHz Oven Controlled VXO - W2EUP 11 MHz to 34 MHz VCO with Constant Amplitude 80m-6m Vackar VFO 135 MHz to 139 MHz VCO - W2EUP Stable BFO 455 kHz Stable Ceramic Resonator BFO - WN5Y Source-Coupled FET VFO 10.7 MHz VXO - K1BLA 137 kHz VFX Butler VXO Fundamental-or-Overtone 1 MHz - 25 MHz Clock Oscillator 80 MHz - 300 MHz Seiler VCO 100 kHz - 100 MHz Sweep VCO 20 MHz Low-Distortion JFET Oscillator High-Q X-tal JFET Oscillator Very Stable X-tal JFET Oscillator 1 MHz to 10 MHz VCO 3 MHz - 30 MHz Colpitts Darlington X-tal Oscillator 20 kHz Very-Low-Distortion (0.003%) Oscillator 65 MHz to110 MHz Harmonic X-tal Oscillator 96 MHz High-Stability X-tal Oscillator - DK1AG 1 MHz Low Distortion X-tal Oscillator - K9EUI 1 MHz Reinartz Type Oscillator 3.57 MHz FET VXO 3 MHz to 10 MHz NE602 Oscillator 48 MHz FM X-tal Oscillator 74 MHz VCO - NA5N 100 kHz Clapp Oscillator 455 kHz Ceramic-Crystal BFO 455 kHz Crystal BFO 455 kHz LC FET Oscillator 500 kHz Stable LC BFO 3MHz - 15 MHz Low Noise Colpitts X-tal Oscillator 5 MHz Amplitude Stabilized Oscillator 5 MHz RC Oscillator 10 MHz Meacham Half-Bridge X-tal Oscillator 96 MHz Low Noise Oscillator 96 MHz Short-Term Stable Oscillator 500 kHz "Buffer" X-tal Oscillator Butler Emitter Follower VXO Harmonic Emitter Coupled X-tal Oscillator High-Q Pierce X-tal Oscillators Increased Stability X-tal Oscillators LC Oscillator with Amplitude Stabilization Stable LC Oscillators Two BJTs Pierce X-tal Oscillator 5 MHz Ultra Low Noise Floor X-tal Oscillator X-tal Oscillator 60dB Harmonic Suppression 11 MHz VFO - W7ZOI 20 MHz Butler X-tal Oscillator 20 MHz Collector-Base Limiting X-tal Oscillator 10 MHz 17dBm Gumm Oscillator 10 MHz Differential Gumm Oscillator 100 MHz Tunnel Diode Oscillator Push-Push DRO Oscillator 3.5 MHz to 3.58 MHz VXO - PY2OHH 8.86 MHz USB-LSB-CW BFO - DL6GL 3.58 MHz VXO - M0DGQ 11.3 MHz Differential Oscillator - DL1ADR 1 MHz Temperature Compensated Crystal Oscillator 102.75 MHz Temperature Compensated Crystal Oscillator - DC8RI JFET VXO - W7ZOI Huth-Kuhn Oscillator 1.5 GHz to 2.5 GHz Sweep VCO 4 MHz to 4.35 MHz Auto Level VFO 1 Hz to 100 kHz SineWave VCO 3.5 MHz - 7 MHz High Output VFO Very Wideband BJT VCO Very Wideband FET VCO Very Wideband Push-Push BJT VCO 3.5 MHz Dual-Gate MOSFET VFO - W7ZOI 80m JFET VFO - W7ZOI 160m JFET VFO - W7ZOI All Bands VFX for 9 MHz IF - W7ZOI 1 GHz JFET Microstrip Oscillator 5.5 MHz to 6 MHz VFO TS-130 9 MHz Varicap BFO 14 MHz VFX - W3MT 135 MHz to 137 MHz VFX - I5BVH 144 MHz to 146 MHz VFX 1 MHz MOSFET Vdd-Stable Oscillator 10.7 MHz Wide-Range VXO 96 MHz Overtone Oscillator 100 kHz Butler Crystal Oscillator 100 kHz Crystal Resonator Oscillator 100 kHz Low Frequency Crystal Oscillator 100 MHz Overtone Butler Oscillator 100 MHz Super-Stable Butler Crystal Oscillator One Transistor Butler Crystal Oscillators Overtone 7dBm-out Crystal Oscillator 144 MHz VXO - W6IOJ 1.8 MHz to 7.3 MHz VFO - W1FB 5.05 MHz to 5.075 MHz 30m Harmonic VFO - AE6C 9.5 MHz VXO 1% Tuning HF VCO with 2N2222 as Varicap 4 MHz - 14 MHz NOT-Gate X-tal Oscillator 10 MHz - 63 MHz X-tal Oscillator 20 MHz Very Stable ECL Oscillator 20 MHz - 50 MHz - 100 MHz X-tal Oscillator 50 kHz - 150 kHz X-tal Oscillator 50 MHz - 105 MHz X-tal Oscillator 144 MHz VFX - KK7B 144 MHz VXO - KK7B Above 100 MHz Overtone X-tal Oscillator 1 MHz to 10 MHz VCO with Op Amp 2.7 MHz VCO Ten-Tec-555 44.975 MHz X-tal Oscillator HF Low Phase Noise Differential Oscillator Up to 120 MHz Low Phase Noise X-tal Oscillator Up to 200 MHz Very Low Phase Noise X-tal Oscillator 1.8 MHz to 2 MHz Seiler VFO - G3BIK 3.4 MHz to 4 MHz Seiler FET VFO 3.5 MHz to 4 MHz Stable FET Vackar VFO 4.9 MHz to 5.6 MHz VFO - K9ALD 4.9 MHz to 6.1 MHz VFO - W3JHR 26 MHz to 34 MHz Vackar VFO 5 kHz to 75 kHz Current Controlled Oscillator Vari-L 5 MHz to 5.5 MHz Seiler VFO - W1DTY 14 MHz Temperature Compensated VFX 30 MHz to 30.5 MHz Stable VFO - W1OOP 170 MHz to 240 MHz Current Controlled Oscillator Vari-L 250 MHz to 380 MHz Current Controlled Oscillator Vari-L Low Frequency Pierce X-tal Oscillators 1.8 MHz Push-Pull X-tal Oscillator - W3FQJ 7 MHz to 7.3 MHz Seiler VFO - K4BGF 7 MHz to 7.3 MHz Vackar VFO - K4BGF 5 MHz to 5.5 MHz Very Stable Seiler VFO - OH2CD 15 MHz Stable Franklin VFO - W5JJ 200 kHz Op-Amp Oscillators - W6GXN 5 MHz Stable X-tal Oscillator - W4AAD 5 MHz to 5.5 MHz Stable MOSFET VFO - VE6ABX 20 MHz Very Low Distortion Colpitts Oscillator 220 MHz VCO - W6GXN 455 kHz BFO - W1SNN Goral X-tal Oscillator - W6TNS 3.5 MHz Phasing Oscillator - K6ZX 9 MHz Sideband MOSFET Oscillator - W3FQJ Low Frequency X-tal Oscillator - DJ2LR Unetuned ALC MOSFET Oscillator - W3FQJ 1 MHz Very Stable X-tal Oscillator - VK2ZTB 1 MHz - 18 MHz Parallel Mode X-tal Oscillator - VK2ZTB 1 MHz - 20 MHz Weggeman TTL X-tal Oscillator - VK2ZTB 3.5 MHz to 3.8 MHz High-Stability VFO - W1DTY 3 MHz - 15 MHz FET VXO - VK2ZTB 3 MHz - 15 MHz Lane VXO - VK2ZTB 7 MHz Stable VFO - W1CER 14 MHz Stable Doubler VFO - W1CER 15 MHz - 60 MHz Pierce MOSFET Oscillator - VK2ZTB 15 MHz - 65 MHz 3rd Overtone X-tal Oscillator - VK2ZTB 15 MHz - 65 MHz Impedance-Inverting Oscillator - VK2ZTB 20 MHz - 60 MHz 3rd Overtone X-tal Oscillator - VK2ZTB 50 kHz - 500 kHz Parallel-Mode X-tal Oscillator - VK2ZTB 65 MHz - 110 MHz Overtone X-tal Oscillator - VK2ZTB 90 MHz - 125 MHz Overtone X-tal Oscillator - W1JAA Harmonic Tuned Miller X-tal Oscillator - VK2ZTB Low Frequency Foster-Rankin X-tal Oscillator - VK2ZTB Low Frequency Lane X-tal Oscillator - VK2ZTB 1 MHz Series-Tank LC Oscillator 1 MHz - 5 MHz X-tal Oscillators with Current Sources 5 MHz JFET-PNP LC Oscillator 5 MHz - 15 MHz Barrier-Mode Harmonic Oscillator 8 MHz Wide Tuning Range VXO 25 kHz to 370 kHz TTL SN7400 VCO 27 MHz Harmonics Butler X-tal Oscillator 28 MHz Cascode Oscillator 350 kHz to 850 kHz Vcc Tuned VCO 500 kHz Oscillator Based on X-tal Difference Amplitude Stabilized JFET VFO Low Distortion Modified Clapp X-tal Oscillator Low Frequency X-tal Oscillators SN7400 Relaxation LC Oscillators Tank-Free Harmonic X-tal Oscillator 5 MHz Very Low Noise VFO - DJ2LR Low Distortion VFO - DJ2LR 400 kHz - 30 MHz Low Noise X-tal Oscillator - DJ2LR Ultra Low Noise Overtone Oscillator - DJ2LR 1 MHz Three Stages Oscillator - WA1SPI 2 MHz to 10 MHz Vackar FET VFO 2 MHz to 20 MHz X-tal Loading Oscillator - WB2EGZ 5 MHz to 5.5 MHz Stable VFO - G4UAZ 5 MHz to 5.5 MHz VFO - G3SJX 8 MHz Series Resonance X-tal Oscillator - WB2EGZ 9 MHz Low Distortion X-tal BFO - K1LOG 10 kHz to 150 kHz Low Frequency X-tal Oscillator - WB2EGZ 20 MHz - 100 MHz Butler BJT-FET X-tal Oscillator - WB2EGZ 20 MHz - 100 MHz Overtone X-tal Oscillator - WB2EGZ 30.2 MHz to 30.3 MHz Stable MOSFET VCO - WA9HUV 40m VFX with 1MHz X-tal - WA1SPI 45 MHz X-tal Switch Oscillator - WB2EGZ 50 MHz - 150 MHz Overtone X-tal Oscillator - WB2EGZ 57 MHz Fifth Overtone X-tal Oscillator - WB2EGZ 115 MHz Stable Overtone X-tal Oscillator - WB2EGZ 270 MHz to 500 MHz BFY90 VCO - DC9RK 380 MHz to 540 MHz Low Spur VFO - N6TX Parallel Resonance X-tal Oscillators - WB2EGZ TTL and CMOS X-tal Oscillators - WB2EGZ 7 MHz - 10.5 MHz Iron-Vane VFO - W0YBF 12 MHz - 23 MHz Couplet L-Tuned MOSFET VFO - W0YBF 1.1 GHz to 1.2 GHz VFO Prescaler Output - WA9HUV 45 MHz to 75 MHz VCO - W2VJN 7 MHz Phantom Coil VXO - W3MT 100 kHz - 10 MHz X-tal Oscillator Ultra Low Noise Floor Oscillator - DJ2LR 9 MHz Cylinder Tuned Stable VFO - W0YBF 30 MHz Disk Tuned Hartley Stable VFO - W0YBF 100 MHz - 400 MHz VCO with J310 - WA4MGX 1.8 GHz to 2.8 GHz VCO - W0DTV 10.7 MHz Tuned Ceramic Resonator VCO - K2BLA 116 MHz Oscillator - W1JR 1152 MHz VCO - WA9HUV Low Frequency Mixing BFO - K2BLA 1.5 GHz to 2 GHz VCO - WA6DYW 1 GHz VCO - N6GN 5 MHz to 5.5 MHz Dual MOSFET VFO 34 MHz to 40 MHz VCO - K4IPV Dual-FET X-tal Oscillator Franklin Oscillator Original and FET FT-102 Franklin VFO - VE3RF 7 MHz to 7.3 MHz VFX - W1FB VXO and Inductor Calculation - W1FB 7 MHz VCO with ALC 3 MHz - 30 MHz Fundamental X-tal Oscillator - DK1AG 7 MHz VFO 2N3904-as-Varicap - W1FB 20 kHz X-tal Oscillator - DK1AG 50 kHz - 500 kHz Oscillator - DK1AG 455 kHz JFET BFO - G8SEQ Overtone AT-X-tals Oscillator - DK1AG 3.1 MHz to 3.2 MHz Jupiter VFO - VE7BPO 5 MHz to 6 MHz Synthetic-Rock-Stable VFO - W3JHR 1.2 GHz VCO MMIC MAR-3 1.8 GHz Class-F Power MESFET LOs 1 GHz Test Oscillator BFP450 1 MHz - 10 MHz TTL X-tal Oscillator 2.3 GHz BJT VCO 2.6 GHz - 5.6 GHz MESFET VCO 2.25 GHz - 4 GHz with Interdigital BPF VCO 2 GHz - 4 GHz Dual-Mode VCO 2 GHz - 6 GHz MESFET Oscillator 4.4 GHz Power MESFET VCO 5.5 GHz GaAs-MESFET Oscillator 5.6 GHz Parallel Feedback Oscillator 5 GHz uStrip MESFET Oscillator 6 GHz - 16 GHz MESFET VCO 7 GHz - 14 GHz MESFET VCO 7th Overtone Oscillator 8 GHz Power MESFET Oscillator 8 MHz VXO 9.5 GHz Power MESFET Series Feedback Oscillator 9.5 GHz uStrip MESFET VCO 12 GHz Series Feedback MESFET Oscillator 57.6 MHz Overtone Oscillator 96 MHz Crystal Oscillator 100 MHz Pierce Crystal Oscillator 170 MHz to 390 MHz MOSFET VCO 230 MHz Low Noise Oscillator 250 MHz to 450 MHz MOSFET VCO 325 MHz to 600 MHz Balanced MOSFET VCO 400 MHz MOSFET Oscillator 580 MHz to 2.2 GHz Combline Filter VCO 650 MHz to 1.7 GHz BJT VCO 750 MHz to 1250 MHz T-type VCO 800 MHz Noise Compensation Oscillator 925 MHz Differential VCO BJT Balanced VCO Class-E Power Oscillator Class-E Power Oscillator with Impedance Transformation Common Collector VCOs Coupled Transmission Lines VCOs Cross-Coupled Push-Push VCO Dual-BJT VCO FM Linear Frequency Tuning VCO High-Efficiency Parallel Feedback Oscillator Ku-Band MESFET VCO Microstrip Cascode Oscillator Microwave Differential BJT VCO Microwave Push-Push Oscillator SiGe Microwave Triple-Push Oscillator Microwave uStrip MESFET VCO Microwave VCO BFP450 MOSFET with Different GND Oscillator Negative Resistance Cascode VCO One-BJT Butler VCXO Parallel Feedback MOSFET Oscillator Parallel Mode X-tal Oscillator Push-Push BJT VCO Series Resonant Linear Tuning VCO Source Coupled JFET Oscillator Source Coupled JFET VCO Symmetrical Armstrong VCO Very Wideband Push-Push VCO Wideband L-transformer VCO Wideband Stable Franklin Oscillator X-Band MESFET VCO 460 MHz - 600 MHz Switchable Oscillator 900 MHz - 1800 MHz BFG540 VCO 900 MHz - 1800 MHz Dual-Band VCO 950 MHz VCO Ceramic Resonator 1150 MHz - 2200 MHz VCO 144 MHz Overtone FM Oscillator 164 MHz Push-Push FET Oscillator Tripler 500 MHz Oscillator MMBTH10 Low Frequency LC Oscillators 37.5 MHz 3rd Overtone Clock Oscillator 2.38 GHz - 2.49 GHz VCO 50 MHz to 50.240 MHz VCXO - S57NAN 62 MHz to 131 MHz VCO 69 MHz to 100 MHz VCO IC-756 133 MHz to 138 MHz VCO IC-730 180 MHz to 360 MHz VCO UHF VCO 2 x 2SC4226 1.68 GHz Oscillator 2 GHz Microstrip Oscillator 10.106 MHz 10kHz-range VCXO - G4COL 10 MHz TCXO-225 27 MHz Push-Push X-tal Oscillator 100 MHz Overtone Oscillator from 20MHz X-tal - VU2ESE HF MOSFET VFO with Buffer Series X-tal VCXO - G4COL 1 MHz to 200 MHz Wideband Vackar VFO 1 MHz to 120 MHz Wideband VFO 30 MHz to 120 MHz VFO 30 MHz to 250 MHz JFET Vackar VFO 400 MHz JFET VCO J310 Wide-Band VCO Saturated Core Reactor 12 GHz Dynamic Phase Injection VCO 262 MHz Low Noise SAW Oscillator Tunable Active Inductor VCO 5 MHz 10kHz-range VFX 16.1 MHz VFO BF960 133.3 MHz to 135.3 MHz VFX - YO3BAL 400 MHz Tunnel Diode Oscillator Negative Resistance LO Lamda Diode - VK6FH 50 MHz FET GND-Gate VCO 100 MHz - 200 MHz VCO 3.56 MHz VXO 10 MHz - 1 GHz VCO RF2506 453 kHz Ceramic Filter BFO 4.9 MHz to 5.5 MHz Dual-Gate VFO R-599 5-6 MHz 7-8 MHz Dual Band VFO - W1CER 5 MHz to 5.5 MHz VFO SB-100 80m, 40m VFO - WA3EQK All-HF Bands Varactor Tuned Oscillator VHF VXO 7 MHz VFO 2N3819 - G3RJV 16 MHz VXO - PA0KSB High Stability JFET VFO 2N3819 SW BFO for SSB-CW 5 MHz to 5.5 MHz Sweeper VCO - W7WKR 5 MHz to 5.5 MHz VFO TS511A 9.5 MHz VXO - K9KZT 14 MHz VFO - W1FB 24 MHz to 24.6 MHz VCO - K1ZJH 1.3 GHz Oscillator - W3HWC 1 MHz - 2 MHz ALC VFO 14.030 MHz VXO - W3MT 35 MHz to 40 MHz Coax Cable VFO 70 MHz to 80 MHz VCO Fine-Coarse Tuning 3.5 MHz - 3.6 MHz Very Stable VFO - PA0TLX 3.58 MHz Ceramic Resonator VFO - G4COL 4 MHz - 4.3 MHz MOSFET Vackar VFO - K6BSU 4 MHz - 4.35 MHz VFO with AGC - G3JIR 7.5 MHz - 21 MHz VFO with AGC - G3JIR 9.3 MHz Low Distortion LC Oscillator MAX436 10.7 MHz Ceramic Resonator VFX - K2BLA 36 MHz - 150 MHz Very Low PN Oscillator 50 MHz - 520 MHz VCO 96 MHz Overtone Butler Oscillator 140 MHz SAW Filter VCO 170 MHz - 300 MHz VFO with AGC 455 kHz BFO using Ceramic Filters 1.8 MHz - 2 MHz Franklin VFO - VE2IB 1 kHz - 10 MHz Any Crystal Oscillator 2 MHz - 10 MHz Simple JFET Vackar VFO 3.5 MHz, 5 kHz Range VXO - G3VA 5 MHz - 5.5 MHz Enable VFO - G4UAZ 10 MHz 5W Oscillator - G3VA 12 MHz - 23 MHz Variable Inductance VFO 14 MHz High-Stability VXO - W3MT 50 MHz 1W Oscillator - G3VA 96 MHz Low Noise X-tal Oscillator - G3SEK 100 kHz - 20 MHz Crystal Oscillator - VE6RF 182 kHz FET Oscillator - G2BKO Any Fundamental and Overtone Crystal LO - W6HPH HF JFET Vackar VFO - G2DXK Low Noise Harmonic Suppression X-tal Oscillator Overtone Crystal Oscillators - G8ZDU Reactance Tuning VFO - W1FB Tuned Drain MOS Oscillator 1.8 MHz - 1.85 MHz VXO - VK6APH 2.5 MHz - 25 MHz VCO 74HC123 2x CV VXO - W1FB 5.2 MHz - 5.4 MHz Hartley VFO - G3TXQ 5 MHz Low Phase Noise VFO - G3USC 10.7 MHz 2% VXO - G3DXZ 10 MHz 12kHz-Range VXO - G4COL 10 MHz Low Noise Oscillator - K7HFD 12 MHz Extremely Low Noise Oscillator - LA8AK 14.475 MHz VCXO - G4COL 15 kHz - 30 kHz Electronic Tuning Oscillator 18 MHz, 25 kHz-range VXO - G4COL 70 MHz Kallitron Oscillator - G8SEQ 75 MHz - 105 MHz Helical VCO - W4ZCB 432 MHz Hellical VCO - G4JNT 455 kHz Ceramic Filter BFO - G8SEQ Ceramic Filter Oscillator - LA8AK Constant Reactance VCO - G3JIR Emitter Coupled Multivibrator Oscillator Franklin VFO - VE3RF Low-Noise JFET Tank Oscillators - G3SBI Reactance Compensated Oscillator - W3WI Series X-tal VXO - G4COL 5.5 MHz to 6 MHz VFO TS-240 5 MHz to 5.5 MHz VFO TS-820 16 MHz - 80 MHz Overtone X-tal Oscillator 80 MHz - 140 MHz Overtone X-tal Oscillator 100 MHz OCXO - DM2DSN 144 MHz VFX TR-7200 Low Noise SC-cut X-tal Oscillator Driscoll 8.5 GHz Antenna with Integrated Oscillator 9 GHz - 39 GHz Self-Oscillating VCO-Mixer 5 MHz - 5.5 MHz VFO FT-301	2.4 GHz Signal Source - W6PQL 900 MHz Signal Source - W6PQL 1104 MHz Signal Source - W6PQL 1296 MHz Signal Spurce - W6PQL 116 MHz High Level X-tal LO 10 GHz LO Multiplier - N1BWT 404 MHz LO - AA5C 12 GHz Signal Source - DB6NT 2808 MHz Signal Source - DC0DA 3256 MHz Signal Source - DB6NT 5616 MHz Signal Source - DB6NT 10223 MHz Signal Source - DL1RQ 10368 MHz Signal Source - DJ6JJ 800 MHz to 2.4 GHz Frequency Tripler Frequency Multiplier 10 MHz to 30 MHz 432 MHz to 1296MHz Frequency Tripler Active Frequency Quadrupler 1.3 GHz Signal Generator - W6PQL 2.4 GHz Signal Generator - W6PQL 1152 MHz PLL Signal Source - OZ1GDS 1152 MHz Signal Source - F6BCU 1150/1152 MHz Signal Source 1152 MHz Signal Source - G4DDK 422 MHz to 1267 MHz Diode Frequency Tripler 1296 MHz Signal Source - W6FZJ 1296 MHz Weaksignal Noise Source - WA6UAM L-band Signal Source - N6TX 1.42 GHz to 5.7 GHz Multiplier - F1HPR 2.5 GHz Signal Source - G4DDK 2 GHz to 12 GHz Multiplier - F1OPA 9.5 GHz Signal Source - F6BVA 10.5 GHz Signal Source - F6BVA 12 GHz Signal Source - F6BVA 130 MHz to 6 GHz Multiplier - F1JGP 1296 MHz to 10368 MHz Multiplier - F6BVA C-band Signal Source - F1JGP 100 MHz to 1700 MHz Frequency Multiplier 902 MHz Signal Source 200 MHz to 600 MHz Frequency Tripler 800 MHz to 2400 MHz Frequency Tripler Varactor Tripler 0.5 MHz to 110 MHz AM/FM Signal Generator Simple 2.4 GHz Signal Source 1 GHz to 1.3 GHz Signal Source - G4DDK Frequency Multipliers Types 100 MHz - 500 MHz Multiplier 432 MHz - 1296 MHz Varactor Tripler - VK2TDN 1 kHz to 9 MHz Sinusoidal Signal Generator 1 kHz to 999 kHz PLL Signal Generator 2 MHz to 2 GHz AM Harmonics Generator 9 MHz to 1.3 GHz Harmonics Generator 44.4 MHz - 45.1 MHz PLL VFO - PA0KSB 455 kHz SSB Generator 144 MHz to 432 MHz Varactor Frequency Tripler Two Microstrip Varactor Frequency Triplers 2.4 GHz Test Generator - DK1KQ 1 MHz to 30 MHz Generator for Antenna-Analyzer - DJ8ES 22.5 MHz 135 MHz Frequency Multiplier - DK1OF 48 MHz VFO Frequency Doubler - DJ3MY 90 MHz to 2160 MHz Frequency Multiplier - DJ1EE 92 MHz to 3312 MHz Signal Source - DC0DA 144 MHz to 28 MHz High Dynamic Range Converter - DJ7VY 144 MHz to 2304 MHz Frequency Multiplier - DC8UG 432 MHz to 3456 MHz Frequency Multiplier - DC3QS 540 MHz to 1080 MHz Frequency Doubler - DC3QS 1080 MHz to 2160 MHz Frequency Doubler - DC3QS 1152 MHz Signal Source - DC0DA 1152 MHz Signal Source - DC8NR x8 Frequency Multiplier with Idler - DC8UG 1152 MHz FM Signal Source - DB1NV 1152 MHz to 10368 MHz Multiplier - DB1NV 576 MHz Signal Source - YU3UMV 1296 MHz Simple Signal Source 2304 MHz Simple Signal Source 1.3 GHz Signal Source - DL1RQ 1.33 GHz to 5.34 GHz Quadrupler - DL1RQ 1 GHz to 10 GHz Marker Generator - DB6NT 2556 MHz Signal Source - DC0DA Power Tripler using BC-junction 10 GHz Weak Signal Source VHF to Microwaves Harmonic Generator - KE5FX 1.2 GHz to 2.4 GHz Frequency Doubler - K1CCL 450 MHz Signal Source - K1CLL VHF-UHF Signal Source - W6WTU Odd Frequency Multiplier 112 MHz to 448 MHz Multiplier - WA1HVG 106.4 MHz to 639 MHz Frequency Multiplier - W1VT 639 MHz to 2556 MHz Frequency Multiplier - W1VT 2304 MHz Low-Level Signal Source - W0PW 1152 MHz / 2176 MHz Signal Source - KT2B Up to 1000 MHz Frequency Multiplier - W6WTU F-to-2F,4F Multipliers - RA3WDK F-to-3F,5F Multiplier - RA3WDK 10 MHz to 300 MHz Multiplier - DB1OV 1.3 GHz Signal Source - G4DDK 2.4 GHz Signal Source - G0MRF Differential Frequency Tripler - Wenzel 404 MHz Signal Source - DC8RI 75 MHz Frequency Tripler - PE9GHz 1152 MHz Signal Source - DB6NT 2556 MHz Signal Source - DF9LN 1268 MHz Signal Source - DF8QK 540 MHz Signal Source - W2CQH Balanced MESFET Frequency Tripler Balanced MESFETs Frequency Doublers BJT Frequency Tripler Reflector-Type HEMT Frequency Triplers Reflector-Type MESFET Frequency Doubler 7 MHz to 14 MHz Push-Push Frequency Doubler - W7ZOI HF Diode and Amplifier Doubler - W7ZOI 1152 MHz - 1296 MHz Signal Source 7 MHz to 14 MHz Push-Push Frequency Doubler - W1FB 144 MHz to 432 MHz Varactor Tripler - I4HHL 360 MHz to 440 MHz Signal Source Broadband Frequency Doubler 150 MHz to 300 MHz Frequency Doubler MC1496 90 MHz to 1090 MHz Continuous Range Signal Source IFR1500 380 MHz Signal Source 432 MHz - 1296 MHz Signal Source - K6RIL 144 MHz to 432 MHz 22W Tripler - W1OOP 432 MHz to 1296 MHz Varactor Frequency Tripler - K4SUM 144 MHz to 432 MHz Signal Source - K6JC Up-to 1.3 GHz Harmonic Generator - W6CMQ 8 MHz to 1296 MHz Weak Signal Source - K6JYO 225 MHz Parametric Frequency Doubler - W6GXN 404 MHz Signal Source - W6GXN FET Frequency Multipliers - W6GXN Frequency Multiplier for 2m Transverter - W0LER High Efficiency Frequency Tripler - W6GXN Low Power Varactor Frequency Tripler - W6GXN 21 MHz to 42 MHz Frequency Doubler - W6GXN 28 MHz Signal Source - W6GXN Broadband Complementary FET Doubler - W6GXN Broadband Frequency Multipliers - W6GXN Broadband Push-Push Frequency Doubler -W6GXN Complementary Common-Base Multipliers - W6GXN Complementary FET Multipliers - W6GXN Complementary Frequency Multipliers - W6GXN Push-Pull Frequency Tripler - W6GXN Push-Push Frequency Doubler - W6GXN UHF Parametric Frequency Multiplier - W6GXN VHF Wireless Marker Generator - W4JAZ 70.2 MHz Signal Generator - LY3LP 422 MHz Signal Source - W6FZJ 432 MHz to 1296 MHz Varactor Tripler - WA6UAM 1296 MHz Generator - LY3LP 1152 MHz Signal Source - WA2ZZF 1.3 GHz Signal Source - N6TX 144 MHz to 432 MHz Frequency Triplers - DJ9HO 96 MHz VXO Signal Source - WA2GFP 116 MHz Signal Source - W6HPH 110 MHz to 220 MHz Frequency Doubler - W1JR 220 MHz to 440 MHz Frequency Doubler - W1JR 110 MHz to 880 MHz Frequency Multiplier - W1JR 94.7 MHz to 758 MHz MMIC Multiplier - N6JH Radial Stubs Frequency Doubler - N1BEP 1080 MHz to 2160 MHz Frequency Doubler - WA9HUV Push-Push Frequency Doubler - W1FB 144 MHz Pip-Squeaq Signal Source - ZF5JF 1296 MHz Pip-Squeaq Signal Source - ZF5JF 36 MHz FM Doubler 50 MHz Signal Source - KK7B 144 MHz Signal Source - KK7B 220 MHz Signal Source - KK7B 912 kHz to 1824 kHz Diode Frequency Doubler Broadband BJT Frequency Doubler Push-Pull Frequency Doubler Push-Push Frequency Tripler 116 MHz Signal Source R-599 Active Frequency Multipliers 1136 MHz 3W Signal Source Frequency Doubler HP2800 Push-Push JFET Frequency Multiplier 378 MHz Signal Source - F8BCU 378 MHz to 1136 MHz Multiplier - F8BCU 384 MHz Signal Source - F8BCU 384 MHz to 1152 MHz Frequency Multiplier - F8BCU 1136 MHz to 10224 MHz Multiplier - F8BCU 1296 MHz Signal Source - G3PFR Simple Frequency Doubler 28 MHz VXO Doubler - PA0MBJ 3.5 MHz to 7 MHz Push-Push Power Doubler 224 MHz Signal Source - W1SL 1.3 GHz Signal Source - G4JNT 288 MHz Signal Source - PA0TLX 360 MHz - 440 MHz Signal Source 1152 MHz Signal Source - G4DDK 10 MHz - 30 MHz CMOS Tripler Crystal Frequency Doubler 74HC04 Passive Frequency Multipliers - G3PVH VHF Modulated Signal Source - F3LG 25 MHz to 75 MHz Multiplier Active Frequency Multipliers Specialized Frequency Multipliers 27 MHz to 54 MHz Frequency Doubler Microwave Frequency Doubler Varactor Frequency Tripler VFO Stabilizers / PLL One chip VFO Stabilizer - G0UPL VFO Stabilizer - PY2MG VFO Stabilizer - PA0FRI Huff-and-Puff VFO Stabilizer - WN5Y VFO Stabilizer - PA0CMU 2 x Huff-and-Puff VFO Stabilizers - RSGB 40 MHz to 70 MHz 3-band Frequency Stabilizer - DC4KU 1 MHz to 100 MHz VFO Stabilizer VFO Stabilizer - PA0KSB 5.6 MHz - 6 MHz PLL-VFO - YB3DD 6 MHz - 6.4 MHz Low-Drift VFO - N6NWP PLL for 144MHz Transceiver - WA4DSY 100 kHz - 35 MHz PLL - DH1AAD Digital Drift Compensation for VFO VFO Stabilizer - DL1BT VFO Stabilizer - DK3SP 10 kHz-step PLL for 2m Transceiver - DK1OF PLL for 2m Transceiver - DK1OF 135 MHz to 137 MHz PLL - DJ7ZV Discrete Phase Comparator - S53MV HF VFO Stabilizer Minisynth VFO - G4JST 38 MHz to 42 MHz PLL 144 MHz Frequency Synthesizer - WB2BWJ 50 MHz PLL - N7APE 144MHz Synthesizer - WA4DSY 100 kHz - 100 MHz PLL Synthesizer PLL Steps 100 kHz - SPI HF FLL Synthesizer VFO Stabilizer - DC4KU All Bands PLL - JR1PWZ 5.5 MHz to 6 MHz PLL VFO for TS130 - OH2BKU 2.7 MHz to 3 MHz VFO for Huff-Puff - PY2OHH Fast Huff-Puff VFO Stabilizer - PY2OHH VFO Stabilizer ver.1 - PA0KSB HF Discrete Components PLL Two Chips Huff-and-Puff VFO - G0UPL Three Chips Huff-and-Puff VFO - G0UPL 100 kHz PLL MC4044 60 MHz to 70 MHz Stabilized VFO - DC4KU 14 MHz to 50 MHz Harmonic PLL - VE5FP 29 MHz to 51 MHz Tunable PLL - W1KNI 50 MHz PLL Synthesizer - W1KNI 9 MHz PLL BFO - W7GHM AFC Circuit for VFO - K6EHV Magnetically Coupled Huff-Puff Stabilized VFO 2m PLL Synthesizer - VE3FIT 5 MHz to 6 MHz VXO Harmonic Synthesizer - W3MT LF to 100 MHz VFO Stabilizer 5.5 MHz VFO Stabilizer - PA0KSB WideBand PLL CD4046 - YO4HFU 1.1 GHz PLL 398 MHz to 440 MHz PLL FM-TRX PLL Loop Filter Types 10 MHz GPS Disciplined Oscillator - JA3GSE 30 MHz GPS Disciplined Oscillator - JA3GSE Harmonic Frequency Oscillator with PLL 60 MHz - 90 MHz PLL 10 MHz Oscillator Controlled by GPS VFO with PLL - DL6WD 7.5 MHz to 45 MHz PLL - W1KNI Fast VFO Stabilizer - G7IXH Simple VFO Stabilizer - F5VLG Stay-Put Frequency Stabilizer - G3DXZ Two Frequencies PLL Circuit Frequency Synthesizer with 1 MHz Step All Bands PLL Synthesizer - G3ROO VHF PLL MC145151 - G3VML 1 MHz - 28 MHz 1MHz-step PLL - G3AQY DDS Inside PLL - EI9GQ Frequency Locking for Microwave Transverters - G4JNT GPS Disciplined Oscillator - YO4HFU Stay-Put Frequency Stabilizer - G3DXZ SHF GPS Locked Signal Source - F5CAU 41 MHz - 43 MHz PLL - FC1BAE Antenna Tuners / Analyzers Antenna Analyzer - DK7NT HF Antenna Analyzer - DL2RRN Antenna Analyzer - F6BQU 88 MHz - 960 MHz Antenna Analyzer Antenna Noise Bridge HF Antenna Tuner with VSWR-meter SWR Bridge Tuner "Rainbow" - N2CX HF Antenna Tuner with VSWR-meter Antenna-Tuner for QRP HF QRP Manual Tuner - W6JJZ 160m to 10m Z-match for Dipole Antenna - DJ5RE 500 kHz - 30 MHz Antenna Tuner Balanced Antenna Tuner - W4MMQ 80m to 10m ZZ-ATU - G4RGN Minituner for HF - K2JHU Antenna Tuner with SWR-meter for QRP - AD5X "Handy-Randy" QRP Tuner - W3RDF Antenna Tuner Helper - K3PUR Super-Tee Antenna Tuner - WB8VGE Wide-Range Antenna Tuner and SWR-meter - VE1TG Audible Tuner for Blind Hams - WA4LBX HF Antenna Analyzer - ZL2PD Gamma-Omega Antenna Match HF Antenna Tuner and Switch - G3TSO MFJ Versa-V Antenna Tuner Modified Z-Match Antenna Tuner RF Tuner for Mobile Antenna - G3TSO 75m Antenna Tuner - VE7GC HF Antenna Tuner Unbalanced-Balanced 20m QRP ATU - M0DGQ 136 kHz Tuner for Loop Antenna - GW4ALG Automatic Antenna Tuner - W6AAQ High Power L-Match Tuner - W7IV Antenna Analyzer - PA1ARE MFJ249 Antenna Analyzer 40m-17m QRP Antenna Coupler and SWR meter - KI6SN Random Length Antenna Tuner - W2OUX 50 MHz 500W Antenna Coupler - K1RAK Aural Tuner - W9NTP Johnson Kilowatt Matchinbox Z-Match for QRP - DF7BL Shunt Matching Coax Stub - K4IPV Stub Impedance Matching Networks Coaxial-Type Antenna Tuners - NH6N Flat-Top Antenna Tuning System - 2BML Balanced Antenna Tuner Types Z-Match Tuner for QRP - K5TD Automatic Antenna Tuner IC-780 500W Toroidal Antenna Tuner - WB2ZSH Auto Antenna Tuner Detector QRP Transmatch - WB0RIO Single Coil Z-Match - VK5BR Z-Match Antenna Tuner - PD7MAA 30m Z-match - VK2ZAY Aerial Coupler - VK3XU QRP Tuner VSWR Power Meter - W1CER Low Power Transmatch with SWR meter - W1CER 432 MHz Transmatch - W2AIH Semi-automatic Antenna Tuner - JA6GW 3MHz - 30 MHz Single Coil Z-Match ATU 50 MHz Antenna Tuners - AA3SJ Flexible Final Match - G3LKZ Low Power Antenna Tuner - G4SGF Z-match for QRP - PA0CMU 1.5 MHz - 30 MHz 20:1 Transmatch - G3VA 50 ohms to 100 ohms Stub Matching Australian Z-Match General Purpose ATU - G3TSO Improved Z-Match ATU - G5RV L-Match Configurations 1.8 MHz ATU for Doublet Antenna - G3UUR 3.5 MHz - 28 MHz ATU - PA0FRI 100W Z-Match ATU - AD5X Intelligent ATU - G3XJP QRP ATU Binary Switch QRP ATU with Parallel Inductors - W1FB Unbalanced to Balanced ATU - AG6K Unbalanced to Balanced PI ATU - G3VA Antenna Tuner Yaesu FC-707 ATU for Vee Center-Fed LW Rhombic Antenna Kenwood AT-130 Antenna Tuner ATV Receivers/Transmitters/Modulators Audio/Video Transmitter AM TV Transmitter 23cm ATV FM Transmitter A-V UHF TV Modulator Crystal TV Video Modulator TV Audio-Video Transmitter Simple TV Video Modulator TV Modulator A-V Transmitter - ZP5ZDM A-V VHF Transmitter FM ATV Receiver UHF A-V 1W Transmitter 1296 MHz FM ATV Transmitter - I2ROM ATV FM Receiver-Demodulator 470 MHZ PLL FM Video Demodulator Two ATV FM PLL Demodulators 432 MHz ATV AM Transmitter 439 MHz ATV AM Transmitter 902 MHz PLL FM ATV Transmitter 1296 MHz 300mW FM ATV Transmitter 1296 MHz AM ATV Transmitter 1296 MHz FM ATV Transmitter - F3YX UHF 2W AM ATV Transmitter UHF 5W AM ATV Transmitter 1296 MHz PLL controlled FM ATV Transmitter - N9ZIA 23cm FM ATV Transmitter - DL1SNG ATV AM Demodulator - DJ4LB ATV AM Video Modulator and Transmitter - DJ4LB 2.4 GHz ATV FM Exciter - DJ8ES 432 MHz ATV Transmitter - KA2CWL 10 GHz Small ATV Transmitter - HB9SLV 432 MHz to Ch2 ATV Converter - W9NTP 10 GHz ATV Modulator Gunn-Diode - GW6BWX 1240 MHz to 1300 MHz A-V Transmitter 1255 MHz ATV Receiver - F5RDH 10 GHz ATV PLL Transmitter - DG6RBP 910 MHz ATV Transmitter - K2MQJ SSTV TX Video Converter - WA9UHV 434 MHz ATV Receiver - G3YQC 2.3 GHz Low Power Video Transmitter - W6ORG 432 MHz ATV Transceiver - K2MQJ 1.3 GHz ATV Transmitter - I1KFH VHF Video-Audio Transmitter Modulator NJM2519A 1.3 GHz ATV FM Transmitter - IZ3CTS 1.3 GHz FMTV Receiver - ZL1WTT 432 MHz to 600 MHz ATV Upconverter 438.5 MHz ATV AM Transmitter - F1DIW FM ATV Video Modulator - F8BCU 10 GHz ATV AV Modulator 10 GHz FM ATV Transceiver 70 MHz ATV Video Demodulator PLL 1296 MHz 0.5W FM ATV Transmitter - IW1DGG 10 GHz FM ATV Modulator RF Mixers Doubly Balanced Mixer MC1496 Mixer Diplexer Dual MOSFET Mixer Microwave Mixers Stripline Quadrature Microwave Mixers High IP3 Mixer +40dBm - IK4AUY 1296 MHz Diode Mixer - WA6UAM Dual-FET HF Mixer High Dynamic Range HF Mixer High IP3 (33dBm) BJT Mixer 900 MHz BJT Gilbert Mixer HF Sub-Harmonic Mixer 1152-10368-24192 MHz Harmonic Mixer Microwave Harmonic Mixer 1296 MHz DBM with ferrite balun - WA6UAM 1296 MHz DBM with coaxial balun - WA6UAM Microwave Coaxial Diode Mixers Distribute Diode Single-Balanced Narrowband Hybrid Mixer Single Schottky Diode Mixer 2.4 GHz Microstrip Harmonic Mixer Double Balanced BJT Mixer - JG1EAD Double-Balanced JFET Mixer Push-Pull Dual-Gate MOSFET Balanced Mixer Quad-FET Switching Mixer 2.4 GHz GaAs-FET Mixer 12 GHz GaAs-FET - Mixer Microwave GaAs-FET Drain Pumped Mixer Binaurale Mixer - DL7MAJ AD835 Mixers - DL7VFS DBM Switching High-Speed CMOS Mixer - DL7VFS DBM Switching Mixer - DL7VFS High-IP3 Dual-AD835 Mixer - DL7VFS High-IP3 Mixer with DG611 - DL7VFS Mixer for SDR with 74HC4053 Switching Mixer with MAX4544 - DL7VFS 144 MHz Dual-FET Mixer - DL6ZZ Wideband Ring Mixer - DL3WR Interdigital Mixer - DK3UC Rat-Race Microwave Mixer Dual-FET Mixer Harmonic Mixer - S53MV Branch-Line Balanced Diode Mixer Quad-JFET DBM Mixer True TLT H-mode Mixer - UR3IQO Sub-Harmonic Mixer - WB6IGP Cascode JFET Mixer Gilbert Mixer with Discrete BJTs High-IP3 Mixer with FST3125 and Control Circuit Microstrip Balanced Mixer using Branch-Coupler High-IP3 DMOS Mixer with SD8901 High-Level Quad-JFET Mixer - Oxner 200 MHz Gate Injection FET Mixer 200 MHz LO-Trap Source Injection FET Mixer 200 MHz Source Injection FET Mixer 1296 MHz Single-Diode Mixer Double-Balanced BJT Mixer without Transformers Differential Dual-Hybrid Mixer Differential Hybrid Mixer Dual-Gate Low-LO Balanced Mixer High IP3 Balanced JFET Mixer Quad JFET Double-Balanced Mixer 5.3 GHz Mixer Electraft-K3 H-mode 1st-Mixer Sub-Harmonic Mixer Differential JFET Mixer Tayloe Front-End with IQ Output H-Mode Two Transformers Mixer - I7SWX Dual-BJT Active Mixer Push-Pull MOSFET Mixer Active BJT Mixer with BPF Double Balanced Active Mixer with MC1596 High Level Double Balanced Diode Mixers Push-Pull Dual-Gate Active Mixer Push-Pull Power FET Active Mixer Switching Power MOSFETs Mixer Mixer for DRM with SO42 Marchand Mixer with Active IF Matching Compensated Split-Ring Mixer - N7ZWY Diode-Based H-Mode Mixer - N7ZWY Enhanced Diode Ring Mixer - N7ZWY KISS Mixer - N7ZWY TLT-Mode Mixer - RZ4HK H-Mode Mixer with IF Amplifier - DL6GL Balanced CMOS Upconversion Mixer Balanced HEMT Upconversion Mixer Ku-Band Balanced Resistive FET Mixer Sub-Harmonically Pumped Mixers Additive JFET Mixer - W7ZOI Double-Balanced FET Mixer with U257 Dual-Bridge High-Level Diode Mixer High Level Balanced JFET Mixer - W7ZOI 1296 MHz DBM Mixer - WA6UAM High Dynamic Range Mixer SD5000 - G3SBI RF Mixer with LM1496 Single Ended Inputs Double Balanced Mixer MC1496 Double Balanced Mixer MC1496 Dual-Supply 30 MHz to 4 GHz Up-Down Mixer LTC5510 High Dynamic Range QSD Front-End Mixer - IK1ODO Digital Mixer - WB8IFM 10.7 MHz to 455 kHz Conversion Mixer - WA2GCF 2304 MHz Mixer - WA2ZZF 432 MHz FET Mixers - DJ9HO Bilateral Mixer Anti-Parallel Diodes - LA8AK High Level Balanced JFET Mixer - DJ2LR Low Noise Figure High-IP3 Mixer - DJ2LR DBM with Noiseless Feedback Amplifier - DJ2LR Cascode MOSFET and BJT Mixer - KF7M Radial Stubs Mixer - N1BEP Low Distortion Double Balanced Mixer 23 GHz Subharmonic Mixer with Coupler 24 GHz Rat-Race Mixer Broadband Diode Mixer with Marchand Balun Double-Sided Double-Balanced Microstrip Mixer Low Cost Microstrip Diode Mixer Microstrip Diode Mixer Waveguide Microwave Mixer Balanced Diode Microwave Converter 6 GHz High-Isolation Single-Balanced Diode Mixer Microstrip Double Balanced Mixer Microstrip Single Ended Mixers Microwave Rat-Race Mixer MMIC Active Balanced Mixer - N6TX Single-Ended Single-Diode Mixer Polyakov Mixer - RA3AAE Sub-Harmonic Mixer - S53MV HF JFET Mixer TS-430 JFET Aditive Mixer IC-700R JFET TX Mixer FT-101 LNA and RF Mixer IC-721 mmWave Single Balanced Diode Mixer Radial Stub Monolithic Double-Ring Diode Mixer Double Balanced JFET Mixer Single Balanced JFET Mixer 40m- 20m DCR Subharmonic Mixer Dual-Band Harmonic Mixer - DK2RS RF Switching Mixer 74HC4066 Transformerless Balanced JFET Mixer 14 MHz Single Balanced Diode Mixer 24 GHz Single Balanced Rat-Race Mixer Dual Diode Microwave Mixer Low Distortion Single Balanced Diode Mixer Single Diode Microwave Mixer 14 MHz DCR VCR Mixer BS170 Distributed Sub-harmonic Mixers Mixer 132dB Dynamic Range 74HC4053 Transformerless Balanced Mixer BJT Voltage Controled Resistor Mixer BS170 High Linearity Kushnik Mixer Microwave Image Reject Mixer 14 MHz - 145 MHz Bilateral Mixer - LA8AK JFET Balanced Mixer-Demod - RA3AAE H-mode Image Reject Mixer-Demodulator - I7SWX Low Cost FST3125 Mixer - G8IBR Modified Diode Ring Mixer - G3UUR Tayloe Polyphase Mixer - G0BBL Transformerless Doubly Balanced Modulator-Mixer - W6HPH Trusk Series-Shunt Feedback Mixer High-IP3 L-Compensated Mixer mmWave GaAsFET uStrip Mixer RF Test Circuits HF Q-meter VK5JST Q-meter - VK5BR Crystal Controlled Q-meter - W3MT Inductor Q-meter - N7APE BandScope for 2m Band Lightening Detector High-Impedance RF Probe FM Deviation Meter Simple Crystal Tester - F5JTZ Two chips LED Frequency Counter - PA2OHH 0-99 kHz Frequency Counter - G0UPL Electro-Magnetic Waves Detector Long-Wave Lightening Detector Cable Reflection Tester - N9ZIA TDR Circuit and Signals - T.Engdhal TDR Test System - WA0PIA Time Domain Reflectometry Generator - PA3DSC Audio Filter Analyzer Coil Short-Circuit Detector Fonometer Very Low Frequency Survey Probe - VK2ZAY Glitch Detector Satellite Finder Electrostatic Detector 10 Hz to100 kHz Frequency-to-Voltage Converter 100 kHz to 30 MHz RF Probe with Detector Monitor 100 MHz Oscilloscope Probe VHF LC Resonance Indicator Harmonics Detector Lighting Storm Monitor Ultra Simple CRT Oscilloscope Sudden Ionospheric Disturbance Receiver 7-digits Frequency Counter - VU2IYI Quartz Tester Wobbulator 1 Hz - 40 MHz - DC2MR 1 MHz to 30 MHz Quartz Tester - DK4KU Crystal Timebase Antenna Ratio Meter - W1GHZ Splatter Meter - W1BG Voltage to Frequency Converter 140 MHz to 460 MHz Wavemeter - K1CLL FM Deviation Meter - W3QVZ Very Simple Oscilloscope - K8JWR 3-Digit Frequency Counter 15 Hz to 2 MHz Ferranti-Wien Bridge Generator 455 kHz Wobbulator Gauss Meter - KB4ZGC JFET Pinch-Off Voltage Meter 10 Hz to 10 kHz Frequency Meter on DVM - W3HB 146 MHz FM Deviation Meter - KA8OBL 300 kHz to 3 MHz Square-Wave with Few-nsec Rise-Time Butler Quartz Tester for Anti-Resonat Frequency Signal-to-Noise Meter The Curious C-Beeper - Wenzel Modified C-Beeper for Low-Voltage Operation 50 pico-sec Pulse Generator JFET Pinch-OFF Tester LC Bridge - G3OOU Crystal Tester for Filters - K8IQY Mechanical Filter Tester - KK6IL 1 MHz to 500 MHz Antenna Analyzer - VK5JST Voltage to Frequency Converter AD639 Temperature to Frequency Converter Peak Deviation Meter CB AM Monitor with Self Power Supply MOS, FET, BJT Tester - W7ZOI Crystal Tester - N7ZWY FET Voltmeter Linear Readout - W1VD Gaussmeter - KB4ZGC Temperature and Gain Compensated Voltmeter Beat Crystal Frequency Meter - W5JSN Frequency Shift Meter - VK3ZNV Very High Impedance Meter Impedance Bridge - VK2ZAY Crystal Tester for Filters Phase Changing Two-Tone Test Generator - YB9ATA 3-FET Sweep-Sync Generator - W6WTU Sweep Oscillator for Filter Characterization 0-200 kHz Analog Frequency Meter Magnetometer Phase Meter 4030 Phase Meter CD7474 Phase Meter TL080 Phase Meter Phase Meter with Dominant Pole Compensation RF Noise Bridge Phase Meter - K1FK 10 MHz - 600 MHz Automatic Noise Figure Meter - K9IMM Oscillator Sideband Noise Evaluator - DJ2LR Crystal Evaluator for Filters Phase Correlation Meter Phase Meter CD4070 Phase Sensor CD4001 Phase Sensor SN7486 300 kHz - 500 kHz Wobbulator Distortion-SINAD Meter Impedance Bridge Toroid FT37-43 Impedance Bridge for Coax Lines - K1PLP 80m Wobbulator - G7IXK Up to 10.000 Mohm Conductance Meter 3 MHz - 450 MHz, 30 kHz Deviation Meter - G3BIK Noise Bridge Impedance Meter - G3ZOM High Impedance Voltmeter - KC1V Magnetometer Teslameter Power Flow Meter - DJ4GC Test Set X-tals for Filters - W7ZOI 200nsec Generator Transistor Tester - F1LBL
RF Switch / Attenuators	L/C Meters
IF Filters Switching Circuit TX/RX RF Switch FET TX/RX RF Switch PIN RF Sensing TX/RX Switch RX/TX Quarter-Wave PIN Switch PIN Attenuator BAR61 Variable PIN Attenuator 1dB to 20dB 4xPIN Diodes Wideband Switch Modulator-Demodulator using PIN Diodes RF Attenuator Types using PIN Diodes RF Switch Types using PIN Diodes Automatic Antenna Attenualtor 45dB range - RSGB HF 25W PIN Antenna Switch All Transfer PIN Switches PIN Diode Limiter SPMT PIN Switches T/R Switch with Lumped Transmission Line Mixer Quadrature Termination 144 MHz TX/RX PIN Switch - LA8AK T/R Switch with Shunt PIN Diodes No-Wires 3-Antenna Switch 100W - WB5SFB 100 MHz 80dB Attenuator and Switch Absorptive PIN-diode SPDT Switches Non-Reflective PIN-diode Attenuators PIN-diode Multistage Harmonics Limiter Schottky-PIN Diode Limiters High-Isolation PIN Switch for IF-Filters HF Antenna Switch - DL6GL PIN Diode Limiters Reflection-Type Low-Phase Shift PIN Diode Attenuator Two-Stage PIN Diode Limiter T-Network HF BJT Switch T-Network HF Diode Switch TX/RX Switch and CW Monitor - W1FB PIN Attenuator with DC Amplifier - KA2WEU One PIN Diode 40dB Attenuator - VE3GFN 100dB Range Variable JFET Attenuator 16-pos Up-Down Switch 10 MHz - 1 GHz PIN Attenuator Digitally Selectable Precision Attenuator 1000W PIN-diode Antenna Switch - SM5BSZ DC to 1 GHz 0-44dB RF Attenuator RF2420 Bridge Based Attenuator Carrier Operated T-R Switch Effective Way to Switch SSB Filter - EI9GQ FST3125 Band Switches - I7SWX QRP PIN Diode T-R Switch AGC Circuits AGC with Squelch Control AGC with AM Detector Receiver AGC with hang threshold AGC / S-meter - PY2MG AGC Audio Preamplifier AGC in Audio - RSGB IF-stage with AGC PIN-diode IF Amplifier with Auto-AGC Reverse AGC Circuit - W6JFR Audio Automatic Gain Control AGC for 9 MHz IF - DC4KU Audio AGC - N6WA 9 MHz IF with AGC RF Core AGC TX ALC - DH1DM AGC from Audio - EI9GQ AGC PIN Attenuator AGC with PIN Attenuator AGC for Dynamic Microphone - Wenzel AGC 455kHz-IF with PIN Diodes Automatic Audio Leveler - K1QW 100dB Range Three Stage AGC - W7ZOI Cascode Hybrid AGC - W7ZOI Cascode JFET AGC - W7ZOI Adaptive Bias Circuit AGC Amplifier and Detector 741 AGC in Audio - DL5MGD Audio AGC with 2xBJT Audio AGC and VOX Auto Volume Control and Limiter Dual IF with AGC TL072 High Efficiency AGC with PIN Diodes IF Stage AM Detector with AGC Audio Power Amplifier with AGC Output Wideband AGC Amplifier with MC1496 AGC Circuit from Audio - W1DTY Audio AGC, Squelch, BJT Power Amplifier AGC in Audio - WA5SNZ Hang-AGC SSB-AM Detector - W1ERJ Low Voltage Audio AGC - WA5SNZ Cascode FET Amplifier with AGC AGC for MOSFETs - K6SDX Dual Time AGC - DJ2LR ALC for TX - DJ2LR AGC Audio - K7NM AM Squelch and AGC Audio AGC NE575 - W1FB Audio AGC - W1FB Audio Strength Meter - W1FB IF AGC - W1FB Power Amplifier ALC Circuit - YO4HFU 455 kHz AM IF Amplifier Detector AGC AGC Meter Circuit R-599 HF VFO Amplifier with AGC AGC in Audio NE592 AGC S-meter SPR-4 Audio AGC Limiter Improved AGC with JFET Hang AGC - W6MUR 9 MHz IF Amplifier with AGC - W1FB AGC for 9 MHz IF - K5IRK 0.2 MHz - 20 MHz Low Level AGC - LA7AK 4.43 MHz IF with AGC - K6DLG Audio AGC - K1YZW All Bands HF Preamplifier with AGC - G2DXK Audio Amp 50dB AGC range 3x Cascode IF Amplifier AGC - EI9GQ AF AGC and S-meter - EI9GQ AGC for DCR - Z21FO IF AGC with S-meter AGC IF Amplifier - KA2WEU Phase-Shifters Phase Shifter using PIN Diodes Passive Whole-Band LO Phase-Shift Network 90-deg Phase Shifter Phase Shifters Topology Microstrip Phase-Shifter T/R-switch Microstrip Phase Shifters 50 MHz 0 to 100deg Phase Shifter - N6CA 0 to 360deg Phase Shifter 90-deg Broadband Schiffman Phase Shifter 4-Bit Switched-Line Phase Shifter Multioctave Differential 90-deg Phase Shifters 3 MHz - 30 MHz 90deg Phase Shift Network - VK2ZTB Active Audio 90deg Phase Shift Network - VK2ZTB Audio Passive 90deg Phase Shift Network Digital 90deg Phase Shift Networks Mike Preamp 90deg Phase Shift Network - VK2ZTB 180deg Coax Cable Phase Shifter - W6TC Broadband 90deg Schiffman Phase Shifter - K6ZV 3 MHz Phase Shifter LT1226 30 MHz-BW Flat Amplitude Phase Shifter - SM5BSZ	Capacitance Meter Capacitance Meter using DVM Capacimeter using NE555 0-1uF Capacimeter 2xBJT Capacimeter Varactor Capacimeter Capacimeter with 2xNE555 - WA8MCQ 1nF to 100uF Capacimeter Accurate Capacitance Meter with PLL 2pF-1uF Capacimeter - DC6FC Digital Capacimeter 3-digit Capacimeter - W3KBM PLL Capacimeter - WA0ZCR 1pF to 1uF 4-digits Capacimeter Capacimeter with MK5009 - W4VGZ Inductor Gauge Meter Direct Reading on DVM Inductance Meter - W8VWX Inductance Meter using DVM Inductance Meter - N5ESE Inductance Meter - VK5BR L/C meter multirange L/C Meter - IZ7ATH L-C-R Bridge - G3BIK All-BJTs L-C Meter Choke Inductance Checker - W8VWX Capacimeter 74HC132 Digital Capacimeter - K6DYX Capacimeter with 555 - W9QB L/C Meter - W3MT Capacitance Meter - ZL2AUE Direct Reading Capacimeter - W6MUR Direct Reading Capacimeter - WA5SNZ Capacimeter NE556 - WA5SNZ Widerange 3-Modes Capacimeter Capacimeter 2 x 555 - WA3CPH Digital Capacitance Meter - K4GOK Microfarad Counter - PA0CX Inductors Measurements Setup Equation LCR Bridge - GW3JGA Capacimeter on Voltmeter - W0YOR Inductance Meter - G4HUV Capacitance - Inductance Meter - G3ONL L-meter - W6HPH Resonance Capacimeter - G3HGM Wide-Range Capacimeter - F6DQM 2pF to 2uF Capacimeter RF Power and Field Meters Field Strength Meter LM324 RF Power Calibrator VHF Wattmeter LED RF Power Meter - N9ZIA Field Strength Meter 3 Levels DC to 500 MHz Log Detector/Amplifier - DJ1ES Magnetic Field Meter RF dBu Meter LED SWR/Power meter - PY2MG 1 MHz to 1 GHz LED Absorption Meter - GW1TDV True Linear RF Power Detector 500 kHz to 3 GHz LED Field-Strength Meter Automatic VSWR and Power Meter - W0INK HF In-Line Return Loss and Power Meter - N2PK Micro-Wattmeter - W7DB HF-VHF RF Level Meter with Monitor - DL9AH EM-Field Intensity Meter - WA7JHZ Peak Reading RF Power Meter - W0IVJ 0 - 500 MHz Field Strength Meter - DK6UU 10 kHz to10 GHz LED-Bargraph Power Meter - W1GHZ 40 kHz to 200 MHz RF Voltmeter - WA6NIL Calibrated Field Strength Meter - VE3CES 137 kHz Low-Frequency Field Meter - PA0SE Remote Field Strength Meter - W2IMB 2.4 GHz WLAN Field Strength Meter RF Voltmeter - K2QHE True-RMS Power Meter RF Micropower Meter - K1QW 2.4 GHz mW Power Meter - F1HDD 8-LED S-meter Power Meter - PY2OHH Accurate S-meter for Direct Conversion Receivers - WB9JPS Field Strength Meter - K2ZSQ 1 MHz to 500 MHz Low RF Power Meter - WA4ZRP Audible S-Meter - ZL2AMJ S-meter 90dB 0-500 MHz - DC4KU S-meter 120dB 9 MHz-IF - DC4KU S-meter 120dB Dynamic Range - DC4KU Realistic S-meter - DJ3NW Automatic VSWR Power Meter - W0INK Calibrated S-meter - W7SX Accurate S-meter Amplifier Collins RF Voltmeter - G4COL Single Schottky Diode Power Detector - N6GN 1kW PEP Power Meter - WA1SPI Simple RF Power Monitor - W1SL Low Frequency Strength Meter - PA0SE 100 MHz - 2.5 GHz LED RF Signal Meter AD8313 RF Power Meter AD8313 - SV1AFN S-meter Amplifier QRP Wattmeter - SP5DDJ LF to 100 MHz Field Strength Meter Sensitive Wavemeter - VK2ZAY 1.7 MHz - 210 MHz Field Tester 144 MHz Sniffer Field-Meter - ZS6EF 1.8 MHz - 146 MHz RF Power Meter VHF Audible Field Meter Square Law Detector Micro-Wattmeter - W7ZOI dB-Linear S-meter Detector Field Strength Meter - N6YC 2.8 MHz - 38 MHz Sensitive Field Strength Meter - LA8AK Analog Power Meter - G3GRO Audio S-Meter - G3DXZ Bargraph VSWR Power Meter - G3TXQ QRP SWR-Power Meter - ND6T Sonic Watt-meter - G3GKG Return Loss and SWR Meters Return Loss Bridge Return Loss Bridge with AD8307 HF SWR Bridge Dual-LED SWR Indicator for QRP Optical SWR meter RF Bridge for Impedance Measurements QRP SWR Meter - HA5KU Low Power SWR Meter - DL2EWN Antenna Resistive Bridge - W3MT SWR Meter - LA8AK HF SWR-meter - M0DGQ 1.8 MHz to 1300 MHz Return Loss Bridge - HA8ET SWR Meter for 136 kHz - GW4ALG Audio SWR Meter - G4YNM Caron Parallel Impedance Bridge Reflection Coefficient Bridge - W6ZGN Return Loss Sweeper E-Z Impedance Bridge - WA9QIP RF Impedance Bridge - WB2EGZ Impedance Bridge - YA1GJM HF to UHF SWR Bridge - W1JAA Computing SWR Meter - WB9CYY Improved Noise Impedance Bridge - W6BXI High Directivity SWR Meter - DJ2LR Peak RMS SWR Meter - K1ZDI Precision Impedance Noise Bridge - K2BT Reflected Power Limiter - K4KI VHF Noise Impedance Bridge - OE2APM Antenna Noise Bridge - K4IPV Coupling Dip Meter to Antenna - K4IPV 1.8 MHz to 3.8 MHz Antenna Phasometer - K9MLD 10 GHz SWR-meter - AD8319 1.8 MHz - 30 MHz QRP SWR Bridge - W8DIZ RF Power-SWR Meter - OH2NLT VHF-UHF Power-SWR Meter - W1FB Audio Tone SWR Meter - WA6NPC 144 MHz - 430 MHz SWR-meter - DL4YHF HF SWR-meter - DL4YHF HF to 70 MHz SWR Bridge - SP2DMB 50 MHz VSWR meter - FD1FLN Noise Bridge - PA0SE VSWR meter Resistive-Capacitive Divider 70 MHz FWD-REF uStrip Bridge Line Sampler - W1SL QRP FWD-REF Meter Reflection-Coefficient Bridge - W6ZGN 1 MHz - 30 MHz Noise Impedance Bridge - G3BIK Audio SWR Meter - G4JOU Digital Power SWR Meter - G3WPO 100 kHz - 150 MHz Wheatstone Impedance Bridge Omega-T Antenna Noise Bridge
Filters	Dip Meters
Helical Resonator Dimensions Crystal Filters Types 10 MHz SSB Ladder X-tal Filter 3.58 MHz CW Ladder Filter - N2DCH Variable Bandwidth X-tal Filter - G3UUR Variable Quartz Filter 4.43 MHz SSB Filter 27 MHz - 40 MHz Lumped Component Diplexer 430 MHz to 780 MHz Tunable Filter 88 MHz - 108 MHz Notch Filter Notch-Filter using Coax Cable Variable Bandwidth X-tal Filter - LA7MI HF Butterworth BPF - IK4AUY HF Front-End LPF/HPF - IK4AUY 9 MHz Ladder Crystal Filter One Crystal CW/SSB Filter - DL7HG Variable 600 Hz - 1 kHz Crystal Filter - DL2TM 4 MHz Active Crystal Filter - DJ1RL Diplexer IF-amplifier - OE3HKL Various Ladder Crystal Filters - S54S 1.3 GHz / 2.4 GHz / 3.4 GHz BPF - DL3NQ 1296 MHz BPF - DC0DA 144 MHz High-Q High-Power BPF 1296 MHz Interdigital BPF Loop Filter Options for PLLs - DB1NV 9 MHz IF Notch Filter 455 kHz IF with Mechanical Filter Symmetrical Bandwidth Ladder Crystal Filters - DK4SX Ladder Filter with Overtone Crystals - DJ6EV 4.43MHz Neutralized Ladder X-tal Filter -K6OLG Stubs as Resonators 1296 MHz Cavity Band Pass Filter - N6CA 1540 MHz Interdigital Filter Roofing Crystal Filter 2nd Order RC All-Pass Filters Phase Relations in Polyphase Networks 9 MHz CW Roofing Filter - PA3AKE 9 MHz SSB Roofing Filter - PA3AKE 10 GHz Band Pass Filter - W1VT Helical Filter Calculation Narrow-Band LC Matching Networks Calculation 1300 MHz Cavity Band Pass Filter - N6CA 2304 MHz Cavity Band Pass Filter - N6CA Three-Post Two-Sections Cavity Filters - W1GHz 3.58 MHz Buterworth SSB X-tal Filter - W7ZOI 1013 MHz, 2MHz-BW Cavity Filter Dual Ladder Filter for SSB - N2DCH No-Tuned Circuits X-tal Filter 4.43 MHz 9-poles SSB Filter HF BPF and LPF Filters 1 GHz Zero-Order-Resonators Band Pass Filter 144 MHz - 432 MHz Diplexer 8.86 MHz SSB X-tal Filter - F5VOA 8.125 MHz Elecraft-K3 X-tal Filter 9 MHz - IF X-tal Notch Filter 8.5 MHz Ladder X-tal Filter Helical Resonator Unloaded-Q 29.85 MHz Band Pass Filter 29.85 MHz Notch Filter 3.57 MHz Single Crystal Band Pass Filter HF High-Power BPF - W3NQN 5.5 MHz Bridge X-tal Filter LC Diplexer and Equation 4.43 MHz 6-pole Ladder Filter 6.144 MHz Variable-BW X-tal Filter Ten-Tec 2 GHz to 2.5 GHz Tunable BPF - K6RIL 25 MHz to 420 MHz Tunable BPF - K6RIL 432 MHz Through-Line BPF - K6RIL 50 MHz - 144 MHz Printed Interdigital BPF - W5KHT VHF Coaxial Stub Filter - W6SAI Variable-Q Filter W1SNN 432 MHz Cavity Filter - W1JAA Very Narrow X-tal Filter - DJ2LR 9 MHz KVG XF-9B X-tal Filter 18.556 MHz Two X-tals Filter Matching for 10.7 MHz X-tal Filter 4 MHz Cohn CW X-tal Filter 5.1 MHz Variable BW Ladder X-tal Filter Deep Notch Filter Improvement - W0THM 10 MHz IF BPF - W1FB 12 MHz Ladder X-tal Filter - W1FB 4.9152 MHz X-tal Ladder Filter - G4GXO 8 MHz CW X-tal Ladder Filter - F2DC 8 MHz SSB X-tal Ladder Filter - F2DC 12 MHz SSB X-tal Ladder Filter 18.556 MHz Narrow Band X-tal Filter - LA7MI Various Symmetrical X-tal Ladder Filters 2 GHz to 2.6 GHz Band-Pass Cavity Filter - KA1GT 2304 MHz Interdigital Filter - W0PW 2 GHz to 3.3 GHz Tunable BPF - W6OYJ Active Loop Filter - YO4HFU 800 MHz - 2500 MHz Tunable BPF Amplifier Preselector Filter for IC-7300 100kHz Extremely High-Q IF Filter - SM5BSZ 1136 MHz Interdigital Filter 432 MHz Narrow BPF - FC1GOW 10368 MHz Cavity BPF - F8BCU Helical BPF for Field Day Phase Detector Active Loop Filter MC4044 9 MHz Ladder Crystal Filter Theory 9 MHz Ladder Crystal Filter Types 18.5 MHz Improved Two-Crystal Filter - LA7MI 144 MHz Strip-Line BPF - G3UYK 145 MHz - 434 MHz Diplexer - PA0HVA 5260 MHz Dual Mode Elliptic BPF Dual Mode Elliptic Microstrip BPF Variable IF Selectivity Unit - G3ROO 3.5 MHz Tunable Crystal Filter - G3IPV 4.43 MHz Various BW Ladder Filters - G2DXK 5 MHz Variable BW Ladder Filter - UP2NV Ladder Filter with Variable BW Passive CW Filter - W3NQN Variable BW BPF Single X-tal - DL9LX 1.8 MHz Cohn Filter - VK6APH 4.43 MHz Variable BW Ladder Filter - G4DTC 455 kHz 4-Pole Ladder Filter - G3JIR 455 kHz SSB Ceramic Filter - G3WOA 464 kHz Variable BW Filter - DJ6EV DDS LPF and Amplifier - EI9GQ RF Variable Crystal BPF - G3IPV Ultra Narrowband X-tal Filter - GW4HBZ 3 MHz - 30 MHz 45W LPF - YT2FSG 7.1 MHz Notch Filter 200Hz-BW - OE3HKL 8.9964 MHz Notch Filter - DC4KU 500 kHz Mechanical Filter IF Baluns / Transformers Active Baluns - Differential to Single Ended Active Baluns - Single Ended to Differential Balun Transformers 433 MHz Lumped Components Balun Broadband Transformers Guanella 4:1 Current Balun 4:1 Broadband Transformers Coaxial 1:1 Balun Coaxial Baluns HF Coaxial Balun 50-200 ohms HF Twisted-Wire Balun 1MHz - 40MHz (1.5:1) 50ohm-75ohm UNUN 1MHz - 40MHz (2.25:1) 22ohm-50ohm UNUN Equal Delay Transformers Transmission Line Transformers Twisted-Wire Various Impedance Ratio Transformers HF Single Coax Broadband Balun - W1JR UNUN Unbalanced-to-Unbalanced Transformers Planar Baluns Configurations Quarter-wave Coaxial Baluns Distributed Wideband Balun for Microwaves Microstrip Balun Balanced-to-Balanced 4:1 Transformer - N7ZVY Badger 1:1 Balun Reisert Cross-Over 1:1 Coaxial Balun Guanella Balun Characteristics Marchand Balun Characteristics Ruthroff Balun Characteristics Windom Balun 2kW for HF - OH7SV Baluns for Frequency Doublers - Wenzel 1:9 Unbalanced-Unbalanced Transformer Coaxial Matching Stub Broadband Balun Transformers Broadband UnUn Transformers Broadband Parallel-Connected Cable 1:4 Baluns Cable Transformers for Push–Pull Operation Coupled Line Marchand Balun Configurations Marchand Balun Configurations Planar Marchand Balun Configurations 9:1 Ferrite Bead Choke Balun HF High-Power Balun - WA6BAN Semi-Rigid Coax Baluns - WA6UAM Broadband 1:4 Coax Transformer - W6TC Coax Cable Transformers - W6TC Compensating Winding Balun - W6TC Coreless Balun Transformers - W6TC 2:1 Tube Transformer - K2LB Impedance Change Tube Transformers - K2LB Coax Cable Impedance Transformers Three-Eights Lambda Adjustable Transformer Current and Voltage Balun Transformers - SM7JKV HI-Z to LO-Z Broadband Transformer - W1FB Transformers and Baluns - W1FB Various BALUNs 4:1 Narrow-Band Coax Cable Balun Ferrite-bead Balun - VE2CV 1:4 Guanella Balun Two Cores 9:1 UnUn - M0UKD Switchable Impedance Balun Bazooka Coaxial Balun 1:4 Coax Cable Balun - PA0FRI Delay Line uStrip Balun Magnetic Long-Wire Balun - GW0MVR Marchand uStrip Balun Multi-Balun 4:1, 9:1, 16:1 - I6IBE uStrip to Coplanar-Stripline Balun Choke Balun T200-2 Magnetic UNUN for LW Antenna - OE7OPJ 1:1 Balun with Compensating Winding 50ohm to 12.5ohm Matching Transformer - G3TSO Coaxial Cable Balun Splitters / Dividers / Combiners / Isolators Active RF Isolator Low Frequency Active Isolator/Circulator - Wenzel Power Combiners / Dividers - RSGB DC-100 MHz Active Circulator/Isolator N-way Wilkinson Splitter Wilkinson Divider Versions In-Phase and 180° Transmission Line Combiners 100 MHz to 500 MHz Wilkinson Divider - DJ1EE Wideband 180° Power Divider 3dB Wilkinson Splitter using Coax Cable - DC4KU 6dB Resistive Power Splitter - DC4KU Wheatstone-Bridge as Combiner/Splitter - DC4KU Uniplanar Slotline-Ring Magic-T Double-Sided Slotline-Ring Magic-T Power-Combining using Wilkinson Dividers 3dB Power Divider for 10.3 GHz - G3PHO No-Transformer Phase-Splitter Wideband Wilkinson Splitter 3-Way Wilkinson Power Divider Gysel High-Power In-Phase Planar Combiner/Divider Matched and Isolated Coaxial Cable Combiner Microstrip 3-Way Divider with Improved Isolation Split Tee Power Divider Coaxial Cable Combiner Four Port Coax Power Divider Four Port Output Coax Power Combiner Two-Port Divider Combiner 8-way Power Divider - W7PUA Quarterwave 4-port Power Splitter Quarterwave Power Divider New-Type 3-Way Power Divider 72 MHz 3-way Divider - W1DAX N-way Power Divider Combiner - W1DAX 900 MHz Coax Cable Wilkinson Splitter - W1JR 4-way Power Divider - W1JR Circulators Applications - W1JR Power Dividers - W1JR Two-Way Power Divider - W1JR High Power Splitter Coax Cable Torroid Transformer Splitter S-Band Low-Noise Active Splitter Couplers HF Line Coupler Resistive Couplers Narrowband Coupler from Wilkinson Divider Microstrip Couplers CPW Couplers Lange Coupler Microstrip Reverse-Phase Hybrid-Ring Coupler Slotline Reverse-Phase Hybrid-Ring Coupler CPW Reverse-Phase Hybrid-Ring Coupler Microstrip Coupler Splitter Balun 20dB Transformer Directional Coupler Branch Line Coupler with Impedance Transforming Broadband Branch Line Hybrid Coupler Coupled Line Coupler with Increased Directivity Coupled Line Directional Couplers Lange Coupler with 8.34dB Coupling Printed Branch-Line Quadrature Hybrid Coupler Reduced Size Coupled Line Coupler Reduced Size Branch Line Coupler 2 GHz Broadband Branch-Line Quadrature Hybrid Coupled-line Reduced-size Directional Coupler Increased Directivity Microstrip Couplers Lange Directional Couplers Branch Line Coupler with DGS Capacitively Coupled Hybrids - WA2EWT Direction Coupler and Applications - W1JR Thruline Coupler 0deg and 180deg Couplers 1 MHz to 100 MHz Directional Coupler Hybrid Coupler RF Bridge Demodulators / Detectors SSB Modulator/Demodulator - JG1EAD Tayloe I/Q Detector - W6JL Weaver I/Q Modulator/Demodulator - DK7JD Phase Detector with Discrete Components EK47-Receiver Discrete Phase-Frequency Detector and LPF Very Low Noise/Jitter Phase Detector 9 MHz SSB Modulator/Demodulator - DC4KU Wideband FM Demodulator - DC2CS 9 MHz IF and Demodulator BJT Phase Comparator - DK1OF FM Demodulator-Discriminator with LPF - DJ4BG Active AM Demodulator DC to 500 MHz Log Detector - DJ8ES FM Demodulator for 9 MHz IF - DC4KU UHF to 10 GHz Power Detector - W1GHZ Discrete Phase-Frequency Comparator - K2OAW FM to AM Conversion Discriminator Simple Phase Detector RTTY Demodulator - WB4MBL Phase Detector with Double Balanced Mixer 12 kHz to 500 kHz PLL Demodulator with 4011 NBFM Crystal Limiter/Discriminator Dual-FET Product Detector BFO - VE7BPO Dual-JFET Product Detector Single FET Product Detector Phase-Frequency Detector with Active Loop Filter Dual-Gate MOSFET BFO and Product Detector High Fidelity AM Detectors - VK4FUQ Current Mode Diode Discriminator Current Mode Linear AM Detector Product Detector and BFO with SA612 Product Detector with MC1496 Weiss FM Demodulator - F9JR Diode Phase Detector Sampling Phase Detector with Step-Recovery Diode AD8302 Phase Detector Sampling Phase Detector for DRO Oscillator XOR Phase Detector Class-B Active AM Detector Dual-Gate Product Detector - K0IYE Improved AM Diode Detector - VK4FUQ Improved Infinite Impedance AM Detector - VK4FUQ Improved Infinite Impedance AM Detector - VK4FUQ Precision Full-Wave AM Detector Mobile Phone Detector FM Crystal Discriminator AM / SSB Detector BFO and Product Detector FSK Demodulator NE565 Racal RA17 Improved Demodulators Dichotic Detector for CW - W0THM No-Tune FM Demodulator NE602 Double-Tuned FM Discriminator - W6SAI Foster-Seeley FM Demodulator - W6SAI Product Detector and Audio Preamp - W3TNO Pure FM Ratio Detector - W6SAI Laser Detector - W4KAE Reciprocating SSB Detector - W1SNN Two-BJT Product Detector Dual-Gate MOSFET Product Detector Zero Crossing Level Detector Ruthroff DSB Mod-Demodulator Crystal FM Discriminator - WA0JYK Dual-Gate Product Detector - W8YFB Discrete Phase Comparator - DJ2LR Linear AM Detector - W6GXN Phasing Type SSB Detector - WB9CYY Pulse-Counting FM Detector - W6GXN Pulse-Counting TTL FM Detector - W6GXN Using PLL as AM Detector 9 MHz IF FM Detector CA3089 - DJ2LR 9 MHz IF SSB-Detector with AGC - DJ2LR High Performance X-tal FM Discriminator - DJ2LR PLL FM Demodulator - K7RGE PLL FSK Demodulator - K7RGE Very Low Distortion AM Detector - DJ2LR Parametric Phase Detector BJT - WA9HUV AGC Adjustable Delay AM Detector Automatic Product Detector for DSB - K4UD Low Noise Phase Detector CD4044 - DJ2LR Parametric Phase Detector CD4060 - WA9HUV Product Detector for 3.18 MHz IF - W2VJN Two-Biased Diodes RF Detector - G4COL Doubly Balanced JFET Product Detector - W1FB No-Inductors DB Product Detector MC1496 - W1FB Wheatstone Video Discriminator and Amplifier - W4UCH High-Power Differential Schottky Detector Suppressed Harmonic Schottky Detector Temperature Compensated Microwaves Detector Meteor Ping Detector - ZS5JF PLL FM Demodulator LM565 Quadrature FM XOR Demodulator Envelope Sampler AM Demodulator PSK31 Demodulator AM Modulator-Demodulator with PIN Diodes BPSK Demodulator with Rat-Race Hybrid Ring Differential Detector DSB Synchronous Demodulator Squaring Loop DSB Demodulator SSB Demodulator for HF Suppressed Harmonic Detector Type-Slope FM Discriminator 24 GHz Schottcky Diode Detector Half-Wave Active Detector Phase Frequency Detector - VE7BPO Truly-Linear RF Power Detector 1 kHz - 500 MHz Log Detector 20mV/dB AD8307 Moonnoise Detector - PA0PLY SSB AM FM Detector R-599 50 MHz - 8 GHz Log-Detector HMC713 - F1OPA Double Side Band Detector FM Detectors Types Phase Demodulator MC1496 Cascode IF Amplifier Product Detector FM Bridge Discriminator - W1KLK FM Crystal Discriminator - W1KLK FM Transformerless Discriminator - W1KLK Single JFET Product Detector - W0IYH SSB-AM Detector SPR-4 BJT Product Detector - G6KSN Two-Stage Dickson Charge-Pump Detector Logic Gates FM Demodulator Sensitive AM Demodulator KT315 Full Wave Envelope Detector Full Wave Rectifier - G4FHU Sampling FM Monitor - G4COL 10 GHz Sensitive RF Detector - GW3XYW 100 kHz - 500 MHz Sensitive Field Detector Electrical Noise Detector - G4RAW 0.1 GHz - 2.5 GHz Power Detector AD8313 9 MHz SSB IF Demodulator - DK1HE CW Detector LM567 - KK5JY CW Zero-Beat Detector LM567 - IK0KBA Zero-Beat Indicator LM567 - LA3ZA Zero-Beat Tuning LM567 - N5FC Modulators I/Q Phasing Modulator FSK Modulator CMOS 90-degrees Phase-Shifter for I/Q-modulation Modulation Circuit for SHF Beacon 72 MHz NBFM Modulator - OE6TH Power Supply and Modulator for Gunn LO - G3RPE PSK Modulator Simple LC PM Modulator - W0INK 27MHz X-tal Phase Modulator I/Q Modulator with DBM FM Modulator with MC1648 455 kHz 90dBc Carrier-Rejection DSB Modulator - G3TAG SSB Polyphase Modulator - G3PLX 8 MHz Phase Modulator - W2NSD Discrete I/Q Modulator Weaver SSB Generator 9 MHz SSB Phasing Exciter SSB Modulator with SBL-1 455 kHz SSB Generator with Ceramic Filters Laser Diode Modulator DSB Modulator MC1496 11.059 MHz SSB Generator HF Amplitude Modulator - G3OOU FM Modulator 200kHz Deviation BJT Balanced Modulator Phase Modulator JFET Reactance Modulator Dual-Gate MOSFET Varactor Reactance Modulator AM Collector Modulators Binary FSK Modulator BFSK BPSK Modulator with Printed Coupler Microstrip Reflection-Type Phase Modulators OOK Modulators QPSK Modulator with Printed Coupler Varactor Tuned Phase Modulators 9 MHz SSB Exciter SA602 9 MHz SSB Exciter SBL-1 9 MHz SSB Exciter - I5BVH 3 MHz to 30 MHz SSB Modulator MAX2452 Low Frequency SSB Modulator - VK5BR SSB Generator - W1DTY 8 MHz Phase Modulator - W6SAI 24 MHz FM Modulator - W6SAI Pure FM Modulator - W6SAI 8 MHz Phase Modulator - WA6AJF 9 MHz SSB Modulator - W9KIT AM Modulated DC Power Supply - W5QAO AM Modulator - K1AOB Dual FET DSB Modulator Frequency Divider SSB Generator - W7BZ 1.8 MHz Phasing DSB Generator - W3FQJ AFSK RTTY Generator - W6LLO Passive Phasing SSB Generator - W7CMJ PLL AFSK Generator - K7ZOF 8.1 MHz FM X-tal Oscillator - W0JVA 70 MHz Overtone FM Oscillator - DJ2LR 10.5 MHz Phasing SSB Generator - W7CMJ Bilateral Phasing SSB Generator-Detector - VK2ZTB FM PLL Modulator NE560 - WB6FOC 18 MHz FM X-tal Oscillator - WB2EGZ FM Modulator for PLL - K9LHA Two-Diodes Balanced Modulator - W6IOJ IQ-output from Sinewave MAX4454 Twin-FET DSB Modulator Pre-Emphasis for FM Modulator Microphone Amplifier and SSB Modulator IC-750 Microphone Amplifier and SSB Modulator T-599 SSB Modulator 12.3MHz Ladder Filter 9 MHz SSB Generator 2xMOSFET Phase Modulator JFET-MPF102 I&Q Phasing Modulator - ZL1WTT Video Modulator 40673 9 MHz DSB Modulator - ON5FE 18 MHz FM-FSK Modulated Oscillator 4.5 MHz FM Modulator Pulse Code Modulator - WB2EZG Video Modulator - W0MZL DSB Modulator with Varicaps Single FET Balanced DSB Modulator FT7B Modulation Improvement - G3JQQ Gunn Diode PSU Modulator - G4KNZ 3.58 MHz FSK Modulator - G4JNT 4.43 MHz SSB Modulator - G7FJC 10.7 MHz Polyphase SSB Modulator - G3PLX Direct Upconversion SSB IQ Modulator - G4JNT H-mode Double Balanced Modulator - VK6JDM Polyphase SSB Modulator - G3PLX Single Ended Balanced Modulator - G3PVH	How to use a Dip-Meter - G3YWX Grid Dip Meter 2 MHz - 20 MHz 3-Digits Dip Meter Grid Dip Meter 3.5 MHz to 110 MHz 1.6 MHz to 150 MHz Modulated Grid-Dip Meter Five Grid-Dip Meters Grid-Dip Meter with Digital Display 1 MHz to 42 MHz SuperDipmeter - DK1HE/DL2FI Tube-Type Dip Meter - K4LJA Dip-Meter - WB0ESV Differential Dip Meter Grid Peak Meter - YO8CKU 29 MHz to 460 MHz Dual-FET Grid-DIP Oscillator 70 MHz to 1350 MHz Wave Absorption meter - DJ2HF 400 MHz to 500 MHz Source Dipper - WB0ESV Dip Oscillator - W0MSF Lambda Negative Resistance Dip Meter Dip Meter - DJ4UF HeathKit HD1250 Dip Meter Dip Meter - W6BLZ 2 MHz - 100 MHz Frequency Measuring Oscillator - W6IEL Dual-Gate MOSFET Dip Meter - W6GXN HM-10A Tunnel Dipper JFET Dip Meter - W6GXN MOSFET Dip Meter - W6GXN Varicap Tuned Dip Meter - W6GXN 420 kHz to 220 MHz Dip Meter Push-Pull JFET Dip Meter Dual-Gate MOSFET Dip Meter FET Dip Meter - G3WPO Kalitron Dip Meters - VK3XU Super-Regenerative Dip Meter - VK2ZAY Super-Regenerative JFET Dip Meter - VK2ZAY Auditory Dip Meter - W4MKC Grid-Dip with Audio Monitor - WB4OBZ 1 MHz - 54 MHz Dip Meter - W6HPH 3 MHz - 190 MHz Dip Meter - W0MSF Kenwood DM-81 Dip Meter 1.4 MHz to 300 MHz Dip Meter - G3JIR 3 MHz - 31 MHz Dip Meter - I1FLC Wideband Marker Generator - G4RAW 0.8 MHz - 170 MHz Dip Meter - G3WPO 1.6 MHz - 215 MHz FET Dip Meter - G3WPO 144 MHz Absorption Wavemeter - G6JP 400 kHz - 150 MHz Dip Meter - N1AL Lowe X1 Dip Meter 2 MHz to 200 MHz Dip Meter - IW0CZP 3MHz-30 MHz Dip Impedance Meter Signal Generators S9 HF Signal Generator 30 kHz to 30 MHz Sinusoidal Signal Generator VHF FM Signal Generator Sweeper for 455 kHz IF RF Sweeper - VK2ZAY Sweep Generator - NA5N Simple Function Generator Precision Two-Tone RF Generator for IMD Test - KI6QP 10 Hz to 100 kHz Sinusoidal/Rectangle Generator - OE1MSA Two-Tone IMD Test with Crystal Oscillators Audio Generator 50 Hz to 36 kHz Function Generator - WA2IKL 3 MHz to 22 MHz Signal Generator - K1BKT Crystal-Controlled Audio Generator - KB4ZGC 3 MHz to 45 MHz Signal Generator 1.6 MHz to 32 MHz Signal Generator - W4LJD 100 Hz to 10 kHz Function Generator - KC3ZQ 400 kHz to 33 MHz Signal Generator - N2DCH Pure Sine-Wave Wien Oscillator 7 MHz Dual-Tone Generator for IP3 test - DC4KU 144 MHz FM Signal Generator - ZR6UM HF Signal Generator Marker Generator - KB1MW 1Hz to 10MHz, 50ns-500ms, Pulse Generator 2 MHz Function Generator - KB4ZGC Audio Function Generator Pulse Generator - WA3RJS Two Marker Generators 150 kHz to 34 MHz Signal Generator 1.6 MHz to 33 MHz Signal Generator - ZL2PD 300 Hz to 12 kHz Audio Signal Generator - ZL2PD 400 Hz to 30 MHz Single-Span Generator - ZL2PD 450 kHz to 60 MHz Signal Generator - ZL2PD 1.5 kHz to 15 kHz Low-Distortion (0.001%) Oscillator 20 kHz Very Low Distortion (0.003%) Oscillator 1 Hz to 1 MHz Sine-wave Signal Generator 600 kHz to 60 MHz Signal Generator TDA1072 - DD0RQ Sinewave Audio Generator with Digital Control Calibration Spectrum Generator - DL3XW 10 Hz to 100 kHz RC Signal Generator 1 MHz to 34 MHz FM Signal Generator Audio Generator Square-Sinus uA709 1.7 MHz to 31 MHz Signal Generator - W1FB 1 Hz to 1 MHz Function Generator Digital Sinewave Generator 15 Hz to 40 kHz Wien-Bridge Signal Generator - W6GXN 600 kHz to 12 MHz Modulated Signal Generator - W6GXN Functions Generators NE555 IF Sweep Generator - K4DHC Low Duty Cycle Pulse Generator Voltage Controlled Waveform Generator Rectangle, Triangle, Sine Wave Generator 74C04 30 Hz - 100 kHz Sine Wave Generator - WA5SNZ HF Sweep Generator for Filter Measurements - W7BAR IF Sweep Generator - W2ZUC 100 MHz Marker Generator - AA4FB Calibration Generator - DL6GL 6 kHz - 500 kHz SAW-SQR Generator Fast Wide Range Discrete Function Generator 12 Hz to 70 kHz Simple Function Generator Impulse Generator 4047 0.1 Hz to 20 MHz Function Generator MAX038 1 Hz to 20 MHz Function Generator MAX038 5 Hz to 5 MHz Function Generator MAX038 Triangle and Square Generator 10 Hz to 1 MHz RC Signal Generator 10 Hz to 100 kHz RC Signal Generator Functions Generator 741 200 Hz CW Filter TL084 - DL4YHF 10 Hz to 100 kHz Signal Generator 15 Hz to 1.5 MHz Wien-Bridge Signal Generator 100 kHz to 3 MHz Signal Generator Function Generator CA3280 20 Hz - 20 kHz Function Generator ICL8038 GHz Impulse Generator 10 kHz to 3 MHz ALC Signal Generator 12 MHz to 43 MHz RF Generator - K9ZLU Spectrum Analyzers 50 kHz to 70 MHz Spectrum Analyzer - K7TAU Spectrum Analyzer on the Oscilloscope 0 to 60 MHz Spectrum Analyzer - WB5IPM Spectrum Analyzer using TV-Tuner - W6WTU 1 GHz Spectrum Analyzer Front-End 100 MHz Spectrum Analyzer - W6URH 0 - 100 MHz Spectrum Analyzer Tracking Generator - W6URH Panoramic Spectrum Analyzer for HF Receivers - WA6NCX TV Tuner Spectrum Analyzer - WA2PZO 20 MHz to 600 MHz Spectrum Monitor IF for TV-Tuner for Spectrum Analyzers - AA4FB 200 MHz Spectrum Analyzer 45 MHz to 2050 MHz Spectrum Analyzer 0 - 70 MHz Spectrum Analyzer - VU2ESE 53 MHz to 553 MHz Spectrum Monitor 2m-Band Spectrum Analyzer Monitor 0 - 400 MHz Spectrum Analyzer - GW3IVK 1 MHz - 90 MHz Spectrum Analyzer - G4PMK 400 kHz - 500 kHz Slow-Scan Wobbulator - G3GKG Noise Generators Calibrated Noise Source Flicker-Noise Generator - Wenzel 1 MHz to 30 MHz Noise Source - G1HSM 300 MHz Bandwidth Noise Generator Short-Wave Noise Generator Wideband Temperature Independent Noise Source Noise Generator up to 2 GHz - DF1JM Audio White Noise Generator DC to 20 MHz Noise Generator - S57UUU HF Noise Source - DF3GJ LED Noise Generator - N5ESE Pink Noise Generator White Noise Generator - VE3WWG 12dB Noise Source - K6STI 2304 MHz Tuned Noise Source - VA3VTR 1296 MHz Noise Source - W3BSV Noise Generator for LC Q-Factor Measurement Audio Noise Generator Noise Bridge - W2RU BJT White Noise Generators VHF-UHF Noise Source - DB2GM High-Level Noise Source - W8BBB Gated Noise Source - WA8ULG Voltage Controlled Noise Generator - LA8AK Pseudo Noise Generator - G4JNT AF-RF Signal Injector - KC1V 0 - 3 GHz Noise Source High Frequency Zener Noise Source Simple White Noise Generator Noise Blanker and Canceller High Dynamic Range Noise Blanker Noise Blanker Line Synchronous Noise Blanker - KA7OEI Noise Blanker with Timer Noise Blanker FT-DX-401 Noise Blanker - K4DHC X-Pahse II Noise Killer - DG0KW Noise Blanker - K7CVT RF Noise Limiter - DJ2LR Noise Blanker Frequency Shift - W5QJR Woodpecker Noise Blanker - DJ2LR High Dynamic Range Noise Blanker Gate - DJ2LR Noise Blanker - DJ2LR Noise Gate Reduction 80m to 10m Noise Phaser - PA0SIM Antenna Interference Canceller Current-compensated Ring Core Double-choke Noise Canceller - 7L4IOU Noise Canceller - G8JNJ Noise Canceller MFJ1026 Noise Canceller - VK5BR QRM Eliminator - DK9NL QRM Eliminator S.E.M Antenna Noise Canceller ANC-4 Timewave Dynamic Noise Reducer Selectoroid Interference Eliminator - W1ICP Phasing Loop for Detecting Noise Sources - W1FB 2m Interference Reduction System - G3ZYY 4m-6m Interference Reduction System - G3ZYY 20m - 15m Null Receiving Antenna - G3JWI Universal Interference Suppressor JFET Ground Gate Noise Canceller - DK6ED Various Noise Canceller Circuits - DK6ED CW QRM Fighter - KC2FR Microwave and Microstrip Circuits Microwave Motion Detector 10 GHz Transceiver from a Radar Detector - WA5VJB Radar Detector - W1SNN Microwave Coaxial AM Diode Detector Microwave FM Diode Detectors Microwave Microstrip AM Diode Detector UHF Movement Detector UHF Doppler Motion Detector Biasing Microwave GaAs FET's Staircase Frequency Divider - Wenzel Bias-Tee 5 kHz to 3 GHz Microstrip Stubs 1296 MHz Cavity Tuned BPF - VK2TDN Gunn Diode Oscillators 47 GHz to 94 GHz Frequency Doubler Lumped to Distributed Conversion 10 GHz Un-tuned Gunn Preamplifier - G3RPE Simple 10 GHz Transceiver - DC0MT Printed LC and the Equivalent Schematic and Expression EM Fields of Cavity Resonators Various Transmission Lines and Waveguides Lumped to Microstrip Counterpart Equivalency Transmission Line Impedance at Various-Lengths - VE3RE Microwave Cosmic Crystal Set - WA8YKN 10 GHz Transceiver Blocks - WB6IGP Adjustable Waveguide Components and Equivalency Cavity Parametric Amplifier Cavity Stripline Filters Gunn Diode Transmitters 3.5 GHz Copper-Pipe End-Cap Filter Passive Cavity Transmitter Push-Pull MOSFET Power Amplifier with Hybrids 2 GHz to 10 GHz Cavity Multiplier Gunnplexer Transmitter - W1HR Microwave Spiral Antenna Detector Re-Entrant Cavities Connected in Cascade Whip Antenna Re-Entrant Cavities 10 GHz Waveguide Flange to Coax Adapter - N6GN 10 GHz PCB Flange to Coax Adapter - N6GN Microwave Frequency Measurement Schemes -W1JR 3.3 GHz Tin-Can Polaplexer - WB6IGP Microwave Crystal Detector - WA4WDL Microwave 10 MHz Marker Generator - N6IZW Microstrip Structures Caracteristics and Equivalent Lumped Circuit 2.9 GHz Canonical Dual-Mode Waveguide Cavity Filter Microwave Antennas 10 GHz Tuned Gunn Preamp & Antenna - G3RPE Horn Antenna Dimensions 1.3 GHz / 2.4 GHz Cup-Dipole Horn Antenna - G8ATD 1.3 GHz / 2.4 GHz Short Backfire Antenna - G8ATD 1.3 GHz Circular Waveguide Horn - G8ATD Circular Waveguide Horn Design - G8ATD Microwave Dipole from Semirigid Coax - G8ATD Dish Antenna Calculation 10.3 GHz Horn for Offset Dish - RA3WDK 10368 MHz Feed Horn - RA3WDK Cavity Antenna Helical Antenna 2.4 GHz Transmitting Active Antenna 3.7 GHz Active Circulator Antenna Integrated Amplifier Patch Antenna C-band Quasi-Yagi IQ Direct Conversion Receiver C-band Quasi-Yagi Push-Pull Power Amplifier 4 GHz Patch Antenna Oscillator 2.4 GHz Gain=21dB Circular Horn Antenna 1.2 GHz to 2.4 GHz Wideband Horn Antenna - OE9PMJ 1 GHz to 16 GHz Wideband Horn Antenna 1296 MHz Circular Horn - WA9HUV 2.3 GHz Cigar Antenna - K4TJW 2.3 GHz Coffee-Can Antenna - K4TJW Printed TEM Horn Antenna with Microstrip Balun 10 GHz Template 20dB Horn Antenna Microstrip Junctions, Bends, Transitions Microstrip Bends Waveguide Transitions Microstrip Discontinuities and Applications Microstrip T-Junctions Coplanar-Stripline to CPW Transitions CPW to Rectangular-Waveguide Transitions CPW to Slotline Transitions CPW to MicroStrip Transitions CPW to TSA Transitions Slot Line to Microstrip Transitions Strip to Slot Transition Types of Printed Transmission Lines Microstrip Filters Microstrip Filter Comparison Microstrip Filters Microstrip Resonators Equivalent Circuits for Microstrip Line Resonators Microstrip Filter with Ring-Resonators Microwave Pipecap Filter - WA5VJB Planar Resonators and Equations 2 GHz Extracted-Pole Microstrip BPF 2 GHz Open-Circuited Stubs Microstrip BPF 2 GHz Short-Circuited Stubs Microstrip BPF 2 GHz Pseudo-Combline Microstrip BPF 2 GHz Pseudo-Interdigital Microstrip BPF 3.3 GHz 4-Pole Dual-Mode Microstrip BPF 4.5 GHz Edge-Coupled Microstrip BPF 4 GHz Dual-Mode Triangular-Patch Resonator Filter 6 GHz 3-Pole End-Coupled Microstrip BPF 10 GHz Cut-Off Microstrip LPF 10 GHz Microstrip BPF 820 MHz Dual-Mode Fractal Microstrip BPF 825 MHz CQ Microstrip BPF 900 MHz Trisection Microstrip BPF 950MHz Linear-Phase Microstrip BPF 1800 MHz 8-Pole Quasi-Elliptic Microstrip BPF Tunable Combline Microstrip BPF Tunable Dual-Mode Single-Bias Microstrip BPF Tunable Open-Loop Microstrip BPF Microstrip Bias-Tee with Radial Stubs UWB 5-Pole CPW/Microstrip BPF UWB 5-Pole Short-Circuited Stubs Microstrip BPF UWB 9-Pole Short-Circuited Stubs Microstrip BPF UWB Triple-Mode Microstrip BPF UWB Microstrip BPF with Coupled-Lines Notch UWB Microstrip BPF with Embedded Notch UWB Microstrip Stop Band Filter 5 GHz Interdigital Microstrip BPF 2 GHz Buterworth Microstrip LPF 2 GHz Compact Microstrip LPF Non-Uniform Defected Microstrip LPF T-and-L Defected Microstrip Structures Notch Filters with Triangle-Type Resonators 1.6 GHz Dual-Mode Microstrip Filter 2 GHz - 7 GHz Wideband BPF 4 GHz Dual-Mode Band-Reject-Filter Split-Ring Resonators and Equivalent LC Various Microstrip Resonators Diplexer Patch Antenna Integration Third-Order Bandstop Printed Filter Microstrip Cascaded Quadruplet Filter Metal and Proximity Detectors Metal Detector 1 MHz Metal Detector 1 MHz 3xBJT Metal Detector 3xBJT Homemade Metal Detector 5.5 MHz Metal Detector 111 kHz Metal Detector 130 kHz Metal Detector 140 kHz Metal Detector 300 kHz Metal Detector 300 kHz PLL Metal Detector 300 kHz PNP Metal Detector 455 kHz Metal Detector 625 kHz Metal Detector 650 kHz Metal Detector 4001 - ZL2PD Metal Detector Beat Balance Metal Detector Heathkit GD-1190 Metal Detector Heathkit GR-1290 Metal Detector - JF1OZL Metal Detector Pin Detector Metal Detector PLL 4046 Beachcomber Metal Detector Simple 3xBJT BFO Metal Detector Simple BFO Metal Detector Surfmaster Pi Metal Detector Toro Proximity Detector 600 MHz Proximity Detector 680 kHz Proximity Detector TDA0161 Gunn Proximity Detector Proximity Detector 2 MHz Proximity Detector with Adjust Hold ON Time Simple Radio Sniffer Infrared Proiximity Detector CA3240 Microwave Doppler Proximity Sensor RD9481 Optical Proximity Detector SDP8403 Thermal Proximity Detector RPW100 Ultrasonic Proximity Detector 2xBJT Ultrasonic Proximity Detector Precise Movement Meter Ultrasonic Radar Alarm Circuit 161 kHz Metal Detector 200 kHz Metal Detector Proximity Detector NE567 Metal Detector - VK6FH Simplest Metal Detector TL074 Wires Detector CS209 494 kHz BFO Metal Detector Metal Detector Supplied at 18V Prescalers 2.4 GHz Prescaler Divide by N using 74160 - Wenzel Frequency Counter Prescaler 12 GHz : 1000 Prescaler - DG6RBP 13 GHz Frequency Counter Prescaler - N9ZIA 12.5 GHz Decimal Divider - DG0VE 500 MHz Prescaler 11C90 10 GHz Divide by 10 Prescaler - G8ATD 2.8 GHz Divide by 1000 Prescaler 13 GHz Divide by 1000 Prescaler - N9ZIA 1.1 GHz Prescaler 1.3 GHz Divide by 1000 Prescaler 2.4 GHz Divide by 1000 Prescaler - PA2RF 4.9 GHz Prescaler - S53MV 10 GHz Divide by 100 Prescaler 12 GHz Divide by 64 Prescaler 1.1 GHz Divide by 10 Prescaler MC12080 Divider by 100 and 1000 3.5 GHz Divide by 1000 Prescaler 2 to 4096 Prescaler CD4040
Power Supply	Audio Circuits
DC Protection Circuits Overvoltage Protection Power Supply 13.8V/20A 12V Battery Charger 13.8V Float-Charging Power Supply 28V / 20A Power Supply Low Noise Power Supply for Audio Amplifiers Power Supply with Noise Clean-up Circuit - Wenzel 13.8V / 10A Power Supply - N1HFX 13.8V / 40A Power Supply - OZ2BKK 13.8V / 25A Power Supply - F5JTZ 28V / 50A Power Supply - F5UAM 1.25V-25V / 2.5A Power Supply DC/DC using a Linear Regulator High Voltage DC/DC Converter 0-30V 3A Switch-Mode Power Supply 2V to 36V 10A Power Supply - WB6TOX 13.8V 23A MOSFET Power Supply - KF9GQ Variable Voltage 20A Power Supply Charge-Pump Voltage Doubler with Regulator 13.8V / 30A Single-HexFet Power Supply - RA3WDK 30A Variable Power Supply with HexFet - RA3WDK 12V / 20A PNP Power Supply 13.8V 20A BUZ11 Power Supply DC Current Monitor Low Power Reference 100dB Power Supply Rejection 12V to 138V DCDC for QRP - DL6GL Power Supply LCD meter Display - K1QW 1.5V to 5V 200mA Converter 5V to +/-15V Regulated Converter 30.5V / 1A Super Protected Variable Power Supply 13.8V / 20A Protected Linear Power Supply Safe Power Supply for GaAs FET - WA9HUV 12V-to-18V No-Inductor DC/DC Converter - I1KFH -5V Source DC-DC Voltage Doubler Greinacher Full-Wave Rectifier 12V to 110V/220V DC-AC 300W Inverter 17V DC-DC Supply Nakamichi Bias Regulators for GaAs Power Amplifiers Low Noise Ripple +/- Supply Low Noise Ripple Filters Low Noise Supply Source 28V/ 30A Power Supply - VK2BRD 40V / 2A Power Supply - G3DXZ 12V Automatic Battery Charger 13.8V / 20A Power Supply - FC1JEK 13.8V / 25A Rugged Power Supply - OZ1XB 24V to 240V / 250W / 50 Hz Pseudo-Sine Inverter 50V / 14A Power Supply - G3WOS Power Supply Noise Reduction - Wenzel Voltage Mirror Buck-Boost Power Supply Electronic CW Keyers Electronic Keyer - F5JTZ Iambic Touch-Keyer - YC5NBX Simple CMOS Keyer - OH7SV Simple Electronic Keyer - N1HFX CW Electronic Keyer CMOS Iambic Keyer - N5FC All-BJTs Keyer CW Keyer - YO3APG Deluxe All-Solid-State Iambic Keyer - W1RML Electronic CW Keyer - YO3CZI Single-IC CW Keyer - W9HFM CW Keyer with NE555 Memory Keyer - AI2T Micro-TO CW Keyer - K8CU Iambic Keyer - N5DY Morse Code Speed Display - VE1BU CW Keyer - K3QKO CW Keyer with Monitor - K2BLA 2N2222 Keyer - W6JJI Semiautomatic Keyer - WB4MYL Vibroplex Bug Emulator - W4LJD 7400 CW Keyer - WB5PPV CW Typewriter - W4RNL CW Speedometer - WB4TYL TTL CW Keyer - VE3GSP CMOS Keyer - HB9ABO CMOS Iambic Keyer - WA5KPG CW Speed WPM Control - KD7S Mini-MOS Iambic Keyer - WA6EGY JB Simplest Keyer - KU8K Simple CMOS Keyer for QRP - WB8VGE CMOS CW Touch-Paddle - DL2AWA Memory Keyer - WA1ZFW Touch-Paddle Keyer - W0OGX Self-Completing Keyer - W2GOM CW Regeneration Processor - W4RNL CMOS Morse Keyer - ZL2PD Precision Morse Keyer - G3BIK CW Keyer with Keying Pin CW Keyer 3xNE555 - W7ZOI Dot Memory Keyer - WB0LHE Micro-TO Memory Keyer - K3CU Dual Pad Iambic Keyer Touch Keyer - K6BSU BJT Bug - K2FV Low Cost Memory Keyer - WB9FHC Variable Dash Length Keyer - WA5TRS CMOS Iambic Keyer - WB2DFA Keyer Time Base and Speed Switch - W1PLJ Simple CMOS Keyer - HB9ABO Very Low Power CMOS Keyer - K1HOP Digi-Keyer - AB4DP QRP TLC555 Keyer - K1BQT One-BJT Keyer Hayward Keyer CW Keyer 3 x BJT CW Keyer SN7495 Triambic Keyer - G4FMS Dot-Memory Keyer - WB0LHE Keyer T/R Switch - WA9BLK Memory Keyer IM6518 - K3CU 3xTransistors Keyer - W5FG CMOS Keyer - G4VUX Simple CW Keyer - KI5AZ CAT Interfaces 2 x BJT ICOM CI-V Interface 4 x BJT ICOM Interface - KC2NDA CAT Audio Interface with Transformers Echolink Interface - K3MK ICOM CI-V Interface - KG7SG ICOM CT-17 Interface ICOM Interface - G3VGR ICOM Interface with PTT and CW Keyer - G3VFP ICOM OPC-478 Interface Isolated ICOM CI-V Interface - N4TXI Kenwood CAT Interface - IK2BCP Kenwood MAX232 CAT Interface PSK31 Interface - M0KGK PSK and SSTV Interface RTTY Interface - IK3OAR Sound Card Interface - WA8LMF Super Simple PSK31 Interface - N1NKM Yaesu CAT Interface - DK7IN Yaesu Safe Interface - IK2BCP Interface ICOM Ten-Tec MAX232 VolksRTTY HamCOMM Interface - K7SZL Computer Interface for CW - W2SBA ICOM ACC Interface Flexible Digital Mode Interface - N9ART Isolated Serial Interface - G0HWC Simple Interface for Base-Mobile - G0HWC Simple Serial Interface for Handheld Radios - G0HCW CAT Interface ICOM-YAESU - SP2DMB Fully Isolated Computer Interface Interface for Handheld Radios - G4KQU No-Transformers Simple Interface Buxcomm CAT Interface DigiMode Interface - GM4KGK FT-857-897-817 CAT Interface USB CAT PSK Interface - YT2FSG Miscellaneous Circuits Left / Right Revolution Counter (for tuning) RF Activated Tone Monitor PTT Delay Circuit - W3KKC Multi-Q Receive Loop Antenna Low-Cost FSK Generator Laser-Torch Wireless Communication LNB 13V/18V H/V Switch RX/TX 27 MHz Wireless Remote Control Air-Speed Sensor for Cooling Fan RIT for VFO Transceivers Prevent Thermal Runaway for BJT Power Amplifiers Temperature Compensation for X-tal Oscillators - I6MCF Simple Dual-Gate MOSFET PLL Interference Canceling Circuit - VK5BR Cascode Amplifiers - JG1EAD Sine to Square Wave Converter - Wenzel VFO Temperature Controller AM Detector / Squelch Circuit 1MHz-step Harmonic Marker Generator 9 MHz and 455 kHz IF amplifier - DC6HCL 10 MHz - 1 MHz Marker Generator - OE2TZL 9 MHz IF Amplifier - DC4KU Proportional Temperature Control for Gunnplexer - W4UCH Temperature Fan Regulator for Power Supply Lamda Diode with Two JFETS Capacitance/Voltage Linearization for Varicap Oscillators SSB Monitor - G3OGR Using Collector/Base junction as a Varicap Low Voltage Detector - W6WTU TTL-DAC to Generate SAW Tooth Rotary Switches Eliminator - WA2FPT 10dB Bridge-Tee Pad MOSFET Bidirectional Amplifier Shape CW Transmitter Keying Fan Speed Temperature Controller - DH8AG Temperature Protection - DH8AG Smart-Squelch for SSB - W9MKV Digital Mixer, Low Pass Filter, and x2 Multiplier LED Morse Code Decoder Optical LED Transmitter 455 kHz BFO and Filter for SW Receivers - WB4KTY BFO for SSB-CW Short-Wave Receivers Antenna BFO Lightening Detector Switch - K2AWO Coaxial Cables Technical Parameters Effective-Noise-Temperature vs Noise-Figure High-Linearity Mixer, Diplexer, IF-Amp 3-Tones Controlled Relay Variable Delay Circuit 4-events Relay Sequencer - W6PQL Two-Antennas Interference Canceling Circuit - VK8BR High-Impedance Low-Capacitance Amplifier Ultra-High Zin AC Unity Gain Amplifier 1 Hz to 10 MHz Voltage to Frequency Converter Wideband Discrete Squarer - Wenzel Temperature Compensation for Oscillators - GM4ZNX MOSFET Temperature Protection MOSFET Power Amplifier SWR and Thermal Protection - W9QB DBM, Diplexer and Low-Noise IF Amplifier DBM FET and IF PIN Attenuator TRF / RFI Receiver - K1BQT TX/RX Control Circuit Side-tone-generator VFO Temperature Controller - W0IYH VHF Active Attenuator for Fox Hunting - PA0ZR Infrared Audio Transmitter-Receiver Low-Noise Regenerative Dividers - KE5FX Ultrasonic Bat Receiver - M0DGQ 1/3 Wavelength Dipole Antenna and Matching - W4ULD Dipole Antennas Matching Adapters Doppler Radio Direction Finder - WA2EBY Matching Two Parallel 50ohm Antennas Remote Matching for Vertical Antenna - AD5X Two Element End-Fire Array Antenna Impedance Chart L-and-C vs Frequency All BJT Log Amplifier Dipole Gain vs Length Coaxial Connectors Maximum Working Frequency BJT Bias Circuit for Class AB Operation Bias Circuits for RF BJT RF Activated Relay - W7ZOI Antenna Noise Canceller Infrared Wireless Voice Communication Two Superhet Front-Ends CW-PWM-AM Laser Transceiver - G0MRF FM Laser Transceiver - VK7MU Alternative Methods of Feeding a Dipole Antenna Alternative Methods of Feeding Half-Wave Vertical Antenna SSB Overdrive Indicator - W4OVO S-unit Equivalents on 50 ohms Pulse-Width to Voltage Converter Theremin with MC1496 Voltage to Frequency Converter 9 MHz FM IF CA3089 - DC4KU Input Stage for Frequency Meter - K4EEU AFSK Oscillator Electrical Properties of TL Resonators Zenner Emulator - WA5EKA FM Channel Scanner - WA2GCF FM Squelch - WB4WSU High Linearity HF Front-End - DJ21LR Feedback Amplifiers and Applications - W6HDM Multivibrators One Pulse for a Push 9 MHz IF and Product Detector - W6HPH 10.7 MHz - 455 kHz IF MC1550 - K1ZJH 30 MHz Wide Bandwidth IF - DJ7OO Active Selective Receive Antenna System - W5TRS Ramp Generator DAC08 - WA9HUV Five Methods Supplying Bias GaAs FETs - JH1BRY Wireless IR Headphone RX-TX CD4046 Rotary Dial Mechanism - K3CU Delay and Pulse Width Circuit HF LNA and Mixer Teltow Variable Duty Cycle and Pulse Shaper Circuits - N7ZVY Quasi Bilateral IF for Transceivers - K1ZJH Carrier Position for SSB Filters Digital-AFC for Drake-TR7 - HB9ABO Impedance of Air Dielectric Coax - W1JR Varactor Diodes from Rectifiers - W6WTU 10.7 MHz - 455 kHz FM IF - W4UCH Doppler Shift vs Object Speed VLF Noise Canceller - GW4ALG Laser RX/TX Audio Low Frequency Signal Squarer - VE7BPO CD40106 Schmitt Trigger Applications 100 kHz to 30 MHz DDS Amplifier - K8IQY Square-wave to Pulse Super Buffer - VE7BPO 2m Dual Polarization Satellite Yagi Antenna Air Core Inductor Equation Measuring Speed of Light Acoustic WLAN Finder Wide Bandwidth Cell Phone Jammer 800 MHz Base Station Chaos Jammer 800 MHz Phone Jammer 800 MHz Phone Jammer ver.A 1900 MHz Phone Jammer GSM Phone Jammer - P2JBZ Near-Field PCS Phone Jammer PCS Phone Jammer Base Band Amplifier Bandwidth 5.8 MHz - ZL1WTT 1.1 GHz J-pole Antenna Divide by 1.5 CD7474 Flip-Flop Handles high input frequency - Wenzel Temperature Sensor Fan Drive IC-756 2.4 GHz and 433 MHz Drone Jammer Coax Cable Equations 3-Phase Generator LM324 Stepper Motor DC Generator Unity Gain Buffer 9 MHz IF Amplifier - ON5FE Low Voltage CW Monitor Slow-scan Adapter - W7FEN 1 MHz - 150 MHz 100W Syrup Can Dummy Load 432 MHz Helical Antenna Antenna Pattern on Scope - G8XCN External Noise vs Frequency Gain of Collinear Dipole Antennas Vertical Antenna Array Pattern Audio Voltmeter - W7ZOI Remote Heart Rate Detector CW Doppler Radar Solid State Replacement for Vacuum Tubes OpAmp Discrete BJT Equivalent Converting mW-dBm-dBW Chart High Voltage Ramp Generator Thunderstorm Warning System - F1FBH Electronically Variable Inductor Method of uWave Frequency Measurement - G8KIS 2m Backpack Portable Yagi 137 kHz Signal Conditioning - G4JNT LM317 Applications for GaAs FET RX-TX Protection Diagram The Effect of Feeder Attenuation on VSWR Various Folded Dipoles Impedances Two Phased Vertical Antenna Patterns 10A Active Resistive Load Active Bias for RF BJTs CW Waveshaping Keying Circuit Moisture Meter Ohm's Law Wheel TX-RX Control and Side-tone Generator Feeds for Stacked Yagi Antennas	Active CW Filter and Audio Amplifier Dynamic Noise Filter Microphone Preamplifier Electret Microphone Speech Processor Microphone Amplifier Low/High Impedance Class-A Headphone Amplifier Class-A Audio Amplifier Speech Processor - TL081 Variable CW Bandpass Filter Variable CW Filter and Amplifier Baxandall Audio Filter Microphone Amplifier with ALC Audio Amplifier with mute control Noise Canceling Electret Microphones - WB9YBM Dynamic Microphone Preamplifier Speech Processor - All BJT Audio Preamplifier with Dynamic Noise Reduction Class-A HIFI Headphone Amplifier Super Class-A Low Distortion 3W Amplifier CW Audio Filter with Digital Selection - PY2MG Microphone Preamplifier with Tone Control - PY2MG Boosting Gain and Limiter of LM386 - VK3AWC Variable Audio LPF with MAX293 300 Hz - 3 kHz Microphone Filter VOX Circuit Voice Level Meter Microphone Dynamic Compressor 1kHz Sine Wave Oscillator High-Pass Low-Pass Microphone Preamplifier - N2MNN Passive Audio SSB-CW Filters - W3TS LC CW Band Pass Filters - DC8NR Audio Intelligibility Enhancer - N4GG Dual-Tone Audio Generator - VE3FIT RF Speech Clipper - DF4ZS 1W Audio Amplifier with Compressor Booster for Elektret Microphone 74dB Gain with LM386 - JF1OZL Active Audio BPF 1kHz Bandwidth Audio Squelch Circuit High Dynamic Range Audio Compressor Low Distortion CW Filter SSB Audio Filter Active Noise Canceling Headphones Fourth-order Elliptic SSB LPF Switched-Cap Variable Audio LPF Voice 5 Band Equalizer CW Filter - DL7HG 1W Audio Power Amplifier with LPF Audio Limiter - DJ4BG Ge-BJT Audio Power Amplifier One BJT Audio Low Pass Filter Simple Audio Sinusoidal Generator 3.5W Audio PA with Active CW Filter - W1FB Simple FET Audio Filter Variable Audio Notch Filter - K4VIZ Voice Compressor with Filter Dynamic Noise Limiter Mike Preamplifier with Dynamic Compressor 40dB Audio Notch Filter Microphone Equalizer and Dynamic Compressor - DL7MAJ Audio T-Notch Filter - G3VFP Microphone Frequency Booster - G3VFP Pseudo Stereo CW - G3VFP Tone Meter - W1GHZ Subaudible Tone Encoder - W4NFR Dynamic Mike Preamplifier for IC-706 - W5RK Magical Audio Filter - W6QIF Noise Limiter - K8MKB Pseudo CW Filter Microphone Preamp Compressor - VE3GSP CW Regenerator/Processor - W6GXN Speech Processor with ALC - K9EUI Headphone MOSFET Amplifier Low Noise Compressor Clipper - VE3GSP Masher Speech Processor Single-Stage Push-Pull Audio Power Amplifier 50dB Dynamic Range Compressor Differential Low-Noise Mike Amplifier Speech Expander - VE1BZJ Speech Processor - W0YBF 3.5W Low Distortion Audio Power Amplifier Speech Processor for Electret Mike Super Class-A HiFi 20W Audio Power Amplifier Low Distortion Wien-Bridge Audio Oscillator Nuvistor Audio Preamplifier Low Distortion Wien-Bridge Oscillator - Wenzel CW Audio Tone Monitor IC-765 Morse Decoder Front-End Audio Power Amplifier with AGC - PY2OHH Mike Compressor - PY2OHH Low Frequency Very Low Flicker Noise Amplifier 12W Audio Power Amplifier with TDA2030 12W Low Distortion Single-Ended VMOS Audio Power Amplifier HiFi Head Phone Amplifier Two-Tone Audio Generator - M0DGQ Audio Limiter for NBFM - W3KKC 18W 0.08% Low-Distortion MOSFET Audio Amplifier 60Hz Adjustable-Q Notch Filter CW Pitch Control and Monitor - WA3ENK HZX Headphone Adapter Low Cost CW Filter - WA9PYH Speech Processor FT-817 - KG4JJH Voice Clipper LPF - WB6VMI Perfect Sinus 1 kHz Oscillator Audio Induction Receiver Microphone Speech Processor Ringing-Free CW Active Filter - GW4ALG High-Gain Audio Amplifier for Headphones - W7ZOI 8-pole LPF and 4-pole HPF Audio Amplifier - G0UPL Dynamic Microphone Preamp, Compressor and Filter Audio QRM Filter - KC2FR Microphone Equalizer - K9EID Isolated Audio Line Amplifier Audio Notch and BPF - I6MQS Dual Channel Audio Compressor - W2EEY Post-detection Audio Selector Regenerative Audio Filter - WB6IOM Squelch Circuit - K6HWJ Squelch Circuit - W6SAI Logarithmic Speech Processor - WA3FIY Very Simple Audio Filters - W4NVK RF Speech Processor - K6JYO Speech Compressor LM370 - VK9GN VOX and CW Break-In - W9KIT Audio Pre-emphasis - OH2CD Low Distortion Two-Tone Audio Generators - W6GXN 500 kHz Speech Clipper - K6HTM Audio Filter, Compressor, Power Amplifier - K4DHC High Efficiency Speech Processor - W2MB Noise Reduction for CW - W2ELV Speech Processor - VE6BB Audio LPF and Headphone Amplifier - W7ZOI Active BPF 741 - WA5SNZ Binaural Synthesizer - W6NRW RC Notch Filters - WA5SNZ SB-102 Speech Processor - W6IVI Stable Variable Frequency Audio Oscillator Audio BPF Noise Limiter - DJ2LR Carbon Mike Preamp BPF - W6GXN Low Distortion Audio Noise Limiter - DJ2LR Speech Processor 741 - K3PDW Active Audio Filters - K6JM CW PLL Signal Processor - W7KGZ Low Noise Mike Preamp - K1LOG Speech Amplifiers for Gunnplexers - W1HR Split-Bandwidth Speech Processor - N7WS 400 Hz to 1.8 kHz CW Regenerator - W3BYM Low, Mid, High Voice Equalizer - WB2GCR BPF for SSB - KB0CY Digital Notch and BPF for CW - W1EOR Variable CW Filter LF356 - KB0CY CW Audio Processor - W6NRW Multiband Speech Processor - KL7ISA CW Audio Filter with TL081 - W1FB Microphone Preamp MC-80 Two-Tone Audio Generator for SSB Tuning Smooth Tone Clickless CW Generator - WB0RIO 2xBJT Headphone Amplifier 30W Low Distortion TIP Audio Power Amplifier 80 0Hz 40Hz-BW Audio Filter - ZS5JF Amplitude Equalizer Delay and Amplitude Equalizer Audio Frequency Meter CW Signal Processor 567 Dyna Audio Compressor Microphone Processor CA3130 Repeater Beep Tunable Audio Filter Dual Filtering Voicing Circuit 1 kHz Quadrature Oscillator Microphone Preamplifier with Variable Gain LM358 Electret / Condenser Mike to ICOM Transceiver 12 kHz 1W 2% Distortion Oscillator 3496 Hz Beacon Very Low Distortion 50W MOSFET Audio Power Amplifier 20 Hz to 20 kHz Audio Signal Generator Audio Oscillator Distortion Cancellation 500 Hz - 3 kHz BPF Audio Notch Filter - G7EAH Low Noise Moving Coil Audio Amplifier 1W Headphone Amplifier - ON5FE Dynamic Microphone Preamplifier TL081 Low-Distortion Low-Output Impedance Headphone Amplifier RC Active Filter for CW - W7ZOI Speech Processor with VOX - ON5FE Audio Preamplifier with Tone Correction BJT CW Audio Filter BJT Notch Filter Dynamic Microphone Preamplifier with Tone Control Electret Microphone Preamplifier NE5532 Passive Audio Band Pass Filters RF Speech Processor Microphone Amplifier with VOX Anti-VOX - W1KLK 1 kHz Audio BPF 2N3904 760 Hz BW Passive CW Audio Filter - W1FB 780 Hz CW Audio Filter 2N2222 1000 Hz - 670 Hz Two-Tone Generator Custom Voice Compensation Preamp - G0ACA Audio Notch with Variable Depth - G1VCY Enhanced CW Stereo Audio Filter - LA8AK Ferret Audio Filter - G3YMP 100 Hz - 2.6 kHz Variable Notch Filter - G3VA Active Filter Tone Decoder - GM4BWT Audio Level Meter - G3SEK Audio Speech Processor - G3YWX 2x FET Audio BPF - ZL2APC Dynamic-Mic to PC Preamp - G3SEK High Gain Audio Preamp Low-Z to High-Z Mic Preamp - ZS1J Two-Tone Two-Phase Generator CW Filter with Enhancer - N3AXN CW Key-Click Filter - LA8AK Microphone 8-Band Equalizer - W2IHY 2.5V Low-Current Audio Power Amplifier Microphone Preamplifier with Tone Control - W1FB Microphone Preamplifier with Treble Peaking Stage

home