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Homebrew RF Circuits & Design Ideas

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

·         20m CW Transceiver Norcal

·         30m CW Transceiver Norcal

·         40m CW Transceiver Norcal

·         20m or 30m Image-Rejection Transceiver Norca

·         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

·         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

·         80m CW-QSK Transceiver – NN1G

·         80m One-Transistor CW Transceiver

·         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

·         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 

·         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

·         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

·         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 –

·         All HF Bands Direct Conversion Receiver

·         410 MHz – Superregenerative Receiver for Remote 

·         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

·         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

·         3 x Superregenerative Receivers – RSGB

·         40m MRX-40 Receiver – K8IDN

·         Multiband HF Direct Conversion Receiver

·         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