YO3DAC - Homebrew RF Circuit Design Ideas

Homebrew RF Circuit Design Ideas

http://www.qsl.net/va3iul/

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 2m AM Walkie-Talkie Fredbox - G3XBM 10m CW Transceiver - G3XBM 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	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
Transmitters	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	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
RF Power Amplifiers	High Frequency 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	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
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	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 No-Processor DDS - G3XBM 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 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 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
RF Switch / Attenuator / Phase-Shift	RF Mixers
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 AGC with PIN Attenuator 4xPIN Diodes Wideband Switch Modulator-Demodulator using PIN Diodes Phase Shifter using PIN Diodes RF Attenuator Types using PIN Diodes RF Switch Types using PIN Diodes AGC PIN Attenuator 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 Passive Whole-Band LO Phase-Shift Network T/R Switch with Shunt PIN Diodes	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 Two-BJT Product Detector Dual-Gate MOSFET Product Detector 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
ATV Transmitters/Modulators	RF Test Circuits
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 Filters 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 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 Couplers / Splitters / Isolators HF Line Coupler Active RF Isolator Low Frequency Active Isolator/Circulator - Wenzel Power Combiners / Dividers - RSGB DC-100 MHz Active Circulator/Isolator Resistive Couplers Narrowband Coupler from Wilkinson Divider N-way Wilkinson Splitter Wilkinson Divider Versions In-Phase and 180° Transmission Line Combiners Microstrip Couplers CPW Couplers Lange Coupler 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 Microstrip Reverse-Phase Hybrid-Ring Coupler Slotline Reverse-Phase Hybrid-Ring Coupler CPW Reverse-Phase Hybrid-Ring Coupler Uniplanar Slotline-Ring Magic-T Double-Sided Slotline-Ring Magic-T Modulators / Demodulators / Detectors SSB Modulator/Demodulator - JG1EAD I/Q Phasing Modulator Tayloe I/Q Detector - W6JL Weaver I/Q Modulator/Demodulator - DK7JD FSK Modulator CMOS 90-degrees Phase-Shifter for I/Q-modulation Modulation Circuit for SHF Beacon 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 72 MHz NBFM Modulator - OE6TH BJT Phase Comparator - DK1OF FM Demodulator-Discriminator with LPF - DJ4BG Power Supply and Modulator for Gunn LO - G3RPE PSK Modulator Simple LC PM Modulator - W0INK 27MHz X-tal Phase Modulator Active AM Demodulator DC to 500 MHz Log Detector - DJ8ES I/Q Modulator with DBM FM Demodulator for 9 MHz IF - DC4KU UHF to 10 GHz Power Detector - W1GHZ Discrete Phase-Frequency Comparator - K2OAW FM Modulator with MC1648 FM to AM Conversion Discriminator Simple Phase Detector RTTY Demodulator - WB4MBL Phase Detector with Double Balanced Mixer	Capacitance Meter Field Strength Meter LM324 HF Q-meter VK5JST RF Power Calibrator VHF Wattmeter LED RF Power Meter - N9ZIA Return Loss Bridge Return Loss Bridge with AD8307 HF SWR Bridge Grid Dip Meter 2 MHz - 20 MHz Field Strength Meter 3 Levels BandScope for 2m Band Lightening Detector 3-Digits Dip Meter Calibrated Noise Source Capacitance Meter using DVM Inductance Meter using DVM High-Impedance RF Probe DC to 500 MHz Log Detector/Amplifier - DJ1ES L-C-R Bridge - G3BIK Phase Meter Inductance Meter - VK5BR L/C Meter - IZ7ATH FM Deviation Meter Flicker-Noise Generator - Wenzel 2.4 GHz mW Power Meter - F1HDD Simple Crystal Tester - F5JTZ Inductance Meter - N5ESE Magnetic Field Meter RF dBu Meter Two chips LED Frequency Counter - PA2OHH 0-99 kHz Frequency Counter - G0UPL LED SWR/Power meter - PY2MG Electro-Magnetic Waves Detector Long-Wave Lightening Detector Cable Reflection Tester - N9ZIA TDR Circuit and Signals - T.Engdhal 1 MHz to 1 GHz LED Absorption Meter - GW1TDV S9 HF Signal Generator Audio Filter Analyzer True Linear RF Power Detector Grid Dip Meter 3.5 MHz to 110 MHz 1.6 MHz to 150 MHz Modulated Grid-Dip Meter Five Grid-Dip Meters 30 kHz to 30 MHz Sinusoidal Signal Generator Capacimeter using NE555 0-1uF Capacimeter Coil Short-Circuit Detector Fonometer All-BJTs L-C Meter VHF FM Signal Generator Sweeper for 455 kHz IF 500 kHz to 3 GHz LED Field-Strength Meter 2xBJT Capacimeter Varactor Capacimeter Automatic VSWR and Power Meter - W0INK RF Sweeper - VK2ZAY Very Low Frequency Survey Probe - VK2ZAY 1 MHz to 30 MHz Noise Source - G1HSM Capacimeter with 2xNE555 - WA8MCQ Dual-LED SWR Indicator for QRP HF In-Line Return Loss and Power Meter - N2PK Spectrum Analyzer on the Oscilloscope Grid-Dip Meter with Digital Display Marker Generator - KB1MW Micro-Wattmeter - W7DB Sweep Generator - NA5N Simple Function Generator Optical SWR meter Glitch Detector Satellite Finder Electrostatic Detector 1nF to 100uF Capacimeter 10 Hz to100 kHz Frequency-to-Voltage Converter 100 kHz to 30 MHz RF Probe with Detector Monitor 100 MHz Oscilloscope Probe L/C meter multirange VHF LC Resonance Indicator Harmonics Detector - G3JGO Lighting Storm Monitor Ultra Simple CRT Oscilloscope Sudden Ionospheric Disturbance Receiver 7-digits Frequency Counter - VU2IYI Accurate Capacitance Meter with PLL Precision Two-Tone RF Generator for IMD Test - KI6QP Quartz Tester 10 Hz to 100 kHz Sinusoidal/Rectangle Generator - OE1MSA Two-Tone IMD Test with Crystal Oscillators Wobbulator 1 Hz - 40 MHz - DC2MR 1 MHz to 42 MHz SuperDipmeter - DK1HE/DL2FI HF-VHF RF Level Meter with Monitor - DL9AH Calibration Spectrum Generator - DL3XW 2pF-1uF Capacimeter - DC6FC 70 MHz to 1350 MHz Wave Absorption meter - DJ2HF VHF-UHF Noise Source - DB2GM 29 MHz to 460 MHz Dual-FET Grid-DIP Oscillator RF Bridge for Impedance Measurements RF Noise Bridge Q-meter - VK5BR Audio Generator 50 Hz to 36 kHz EM-Field Intensity Meter - WA7JHZ 1 MHz to 30 MHz Quartz Tester - DK4KU Peak Reading RF Power Meter - W0IVJ 0 - 500 MHz Field Strength Meter - DK6UU QRP SWR Meter - HA5KU Crystal Timebase Phase Meter - K1FK 10 kHz to10 GHz LED-Bargraph Power Meter - W1GHZ Antenna Ratio Meter - W1GHZ 300 MHz Bandwidth Noise Generator Function Generator - WA2IKL Splatter Meter - W1BG 40 kHz to 200 MHz RF Voltmeter - WA6NIL Voltage to Frequency Converter 3 MHz to 22 MHz Signal Generator - K1BKT 140 MHz to 460 MHz Wavemeter - K1CLL Crystal-Controlled Audio Generator - KB4ZGC FM Deviation Meter - W3QVZ Very Simple Oscilloscope - K8JWR 3-Digit Frequency Counter Digital Capacimeter 3 MHz to 45 MHz Signal Generator
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 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 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	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 Audio Switch with active CW Filter - DJ3RV 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
Microwave and Microstrip Circuits	Miscelaneus Circuits
Microwave Motion Detector Biasing Microwave GaAs FET's UHF Doppler Motion Detector 2.4 GHz Prescaler Divide by N using 74160 - Wenzel Staircase Frequency Divider - Wenzel Frequency Counter Prescaler 12 GHz : 1000 Prescaler - DG6RBP Quarter-wave Coaxial Baluns UHF Movement Detector Bias-Tee 5 kHz to 3 GHz Microwave Coaxial AM Diode Detector Microwave FM Diode Detectors Microwave Microstrip AM Diode Detector Power-Combining using Wilkinson Dividers Distributed Wideband Balun for Microwaves Microstrip Stubs Phase Shifters Topology 1296 MHz Cavity Tuned BPF - VK2TDN Microstrip Balun Microstrip Filter Comparation Microstrip Phase-Shifter T/R-switch Gunn Diode Oscillators 47 GHz to 94 GHz Frequency Doubler Microstrip Bends Microstrip Coupler Splitter Balun Microstrip Discontinuities and Applications Microstrip T-Junctions Waveguide Transistions Lumped to Distributed Conversion 12.5 GHz Decimal Divider - DG0VE 500 MHz Prescaler 11C90 10 GHz Tuned Gunn Preamp & Antenna - G3RPE 10 GHz Un-tuned Gunn Preamplifier - G3RPE Simple 10 GHz Transceiver - DC0MT Coplanar-Stripline to CPW Transitions CPW to Rectangular-Waveguide Transitions CPW to Slotline Transitions CPW to MicroStrip Transitions Printed LC and the Equivalent Schematic and Expression EM Fields of Cavity Resonators Horn Antenna Dimensions 3dB Power Divider for 10.3 GHz - G3PHO Microstrip Balanced Mixer using Branch-Coupler Microstrip Filters Microstrip Resonators Various Transmission Lines and Waveguides Microstrip Filter with Ring-Resonators 2 GHz Buterworth Microstrip LPF Lumped to Microstrip Counterpart Equivalency Microstrip Phase Shifters Transmission Line Impedance at Various-Lengths - VE3RE Microwave Pipecap Filter - WA5VJB	High Dynamic Range Noise Blanker Noise Blanker Line Synchronous Noise Blanker - KA7OEI 3xFETs Noise Blanker Noise Blanker with Timer HF Noise Blanker - DJ7VY Left / Right Revolution Counter (for tuning) RF Activated Tone Monitor PTT Delay Circuit - W3KKC Ultrasonic Proximity Detector 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 S-meter 120dB Dynamic Range - DC4KU 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 S-meter 90dB 0-500 MHz - DC4KU S-meter 120dB 9 MHz-IF - DC4KU 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 Realistic S-meter - DJ3NW 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

home