Homebrew RF Circuit Design Ideas

 

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

·         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

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

·         1.3 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

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 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

·         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

·         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

·         Dipole LNA without Balun

·         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

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

·         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

 

 

VFO Stabilizers

·         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

 

RF Switch / Attenuator

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

 

·         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

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

Filters

Baluns

·         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

Couplers / Splitters / Isolators

·         Narrowband Coupler from Wilkinson Divider

·         N-way Wilkinson Splitter

·         Wilkinson Divider Versions

 

·         Capacitance Meter

·         Field Strength Meter LM324

·         HF Q-meter VK5JST

·         Antenna Analyzer - F6BQU

·         RF Power Calibrator

·         VHF Wattmeter

·         88 MHz - 960 MHz Antenna Analyzer

·         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

·         Antenna Noise Bridge

·         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

·         SWR Bridge Tuner "Rainbow" - N2CX

·         Spectrum Analyzer on the Oscilloscope

·         Grid-Dip Meter with Digital Display

·         Marker Generator - KB1MW

·         Micro-Wattmeter - W7DB

·         HF Antenna Tuner with VSWR-meter

·         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

·         Sudden Ionospheric Disturbance Receiver

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

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

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

·         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

·         Audio Automatic Gain Control

·         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

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 Couplers

·         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

·         High Dynamic Range Noise Blanker

·         Left / Right Revolution Counter (for tuning)

·         RF Activated Tone Monitor

·         PTT Delay Circuit - W3KKC

·         HF QRP Manual Tuner - W6JJZ

·         Ultrasonic Proximity Detector

·         Multi-Q Receive Loop Antenna

·         Phase Detector with Discrete Components EK47-Receiver

·         Low-Cost FSK Generator

·         Noise Blanker

·         Laser-Torch Wireless Communication

·         LNB 13V/18V H/V Switch

·         Modulation Circuit for SHF Beacon

·         RX/TX 27 MHz Wireless Remote Control

·         Air-Speed Sensor for Cooling Fan

·         3xFETs Noise Blanker

·         Antenna-Tuner for QRP

·         RIT for VFO Transceivers

·         90-degrees Phase-Shifter for IQ-modulation

·         S-meter 120dB Dynamic Range - DC4KU

·         Prevent Thermal Runaway for BJT Power Amplifiers

·         Temperature Compensation for X-tal Oscillators - I6MCF

·         500 kHz - 30 MHz Antenna Tuner

·         Balanced Antenna Tuner - W4MMQ

·         Simple Dual-Gate MOSFET PLL

·         HF Antenna Tuner with VSWR-meter

·         FSK Modulator CMOS

·         Line Synchronous Noise Blanker - KA7OEI

·         Interference Canceling Circuit - VK5BR

·         Cascode Amplifiers - JG1EAD

·         Sine to Square Wave Converter - Wenzel

·         SSB Modulator/Demodulator - JG1EAD

·         IQ Phasing Modulator

·         Tayloe IQ Detector - W6JL