Welcome to Homebrew Radio related circuits & Design Ideas Radio related circuits
This page contains links to various resources and circuits for learning about Radio related circuits and building electronic devices for amateur radio enthusiasts.
Homebrew Radio related circuits represent the soul of amateur radio experimentation. These self-designed and self-built circuits embody the true spirit of ham radio – learning by doing. From simple crystal radios to sophisticated transceivers, homebrew designs have shaped the evolution of radio technology. Today, these circuits continue to inspire new generations of radio enthusiasts worldwide.
RF Circuits & Design Ideas
- SSB Audio Filter
- Simple SWR Bridge
- Simple Speech Processor
- Simple QRP TX-RX Tester
- Simple QRP SWR Bridge
- Simple 40M Pipsqueak Transmitter
- RF sensing relay
- RF sensing power switch
- QRP Transmitter – 1 MHZ – XTAL Controlled by W2CQH
- QRP Tabacco tin am transmitter
- QRP Dummy load
- QRP Power amplifier using parallel transistors
- One watt AM transmitter circuit
- NS40 Transmitter
- Noise Generator
- Noise cancelling mic using LF351
- Noise canceling microphone
- NOGAnaut Transmitter
- NG7D ONE-DER 20M transmitter
- MRX40 to 80M
- Mini ATU using toroid
- Micro QRP Transmitter
- Malin Head 80m Transmitter
- LM358 Audio compressor for SSB Radio
- HF QRP Power amplifier
- Little Joe one watt CW Transmitter
- G3IVF 80M Transmitter
- FoxTTL 2M Transmitter
- Field strength meter
- FET Two terminal oscillator
- CW Audio Filter
- Crystal Controlled signal Generator
- Class C – AM Transmitter
- Antihiss filter for LM386 Amplifier
- 750hz square wave oscillator
- 45MHZ frequency tripler
- 40M Transmitter
- 40M PNP Transmitter
- 40M PNP Transmitter v2.0
- 30-30 QRP Transmitter
- 2N3053 40M CW Transmitter
- 2 Transistor three watt transmitter
- Microphone compressor using LM1458
- Simple Noise cancelling mircophone using LF351 OpAmp
- Series Modulated AM Transmitter
- Class E – AM Transmitter
- Microphone compressor using two transistors
- Dynamic-compressor with audio preamplifier
- One watt AM Transmitter
- Simple series modulated AM QRP HF Transmitter
- OXO QRP HF Transmitter
- Simple audio compressor for SSB HF rigs
- LM324 microphone speech compressor
- Simple Mic Compressor using 3 Transistors
- SSM2167 Microphone Preamplifier with compression for ubitx Transceiver
- Ribless Programming cable for Motorola GM360 radio
- AGC board for ubitx
- 10 min transmitter
- SOVINA 40M TRANSMITTER
- G4RAW Tag80m tx
- Crystal checker
- 40M tag transmitter
- Pippin QRP Transmitter
- 5 watts CW Transmitter
- Tuneable AF low pass filter
- Two Band TWO-FER Transmitter
- Two Stage Mic audio clipper
- TWOFER QRP Transmitter
- QRP Dummy load
- QRP Tabacco tin am transmitter
- Tuneable AF low pass filter
- Universal QRP Transmitter
- Liquid AM transmitter
- JBOT Linear Amplifier
- DIY Microphone compressor
- AM transmitter using crystal oscillator module
- AM Transmitter -series modulated
- AM Transmitter for BC Band
- 7w am transmitter
- 3 watt AM Transmitter
- 1W HF CW Transmitter
- 74HC240 CW Transmitter
- WENZEL AM Transmitter
- TL071 Audio Compressor
- Dynamic compressor for amateur radio microphones
- Fuzz with compressor
- Guerilla AM Transmitter
- LULU 40M Transmitter
- Speech compressor with three transistors
- 5 watts CW Transmitter
- Pippin qrp transmitter
- 40M tag transmitter
- G4RAW Tag80m tx
- Sovina 40M Transmitter
- DIY Programming cable for a Motorola GM 300
- Ribless Programming cable for Motorola GM360 radio
- SSM2167 Microphone Preamplifier with compression for ubitx Transceiver
- NE555 based Microphone amplifier
- LM324 microphone speech compressor
- OXO-QRP-HF-Transmitter
- Simple series modulated AM QRP HF Transmitter
- One watt AM Transmitter
- Dynamic compressor with audio preamplifier
- Microphone compressor using two transistors
- Noise canceling microphone
- Class E – AM Transmitter
- Class C – AM Transmitter
- Series Modulated AM Transmitter
- Simple Noise cancelling mircophone using LF351 OpAmp
- Microphone compressor using LM1458
Magazines
- QEX Magazine
- CQ Amateur Radio Magazine
- Nuts and Volts (US)
- Elektor (International)
- QST (US) (American Radio Relay League)
- RadCom (UK)
Software
- HFSim (Amateur Radio Simulator)
- WSJT-X (Digital Mode Software)
Popular Electronics Circuits & PCB Design Softwares
- Altium Designer
- Autodesk Eagle
- KiCad (Open-Source)
- DipTrace
- EasyEDA
- Altium CircuitMaker (Free Hobbyist Version)
- DesignSpark PCB
- Siemens PADS
- Xpedition by Mentor Graphics
- OrCAD PCB Designer by Cadence
- Ultra Librarian
- FreeDMD
- KiCad Cloud App (Cloud-Based Version)
- JLCPCB Schematic Editor (Free Online Tool)
- PCB-Gcode
- KiCad Footprint Editor
- Pitracer
- geda (Open-Source)
- DesignSpark PCB OrCAD
- PCB Online
- Sunstone Circuits PCB Design Software
- OSH Park (Free for Simple Designs)
- DirtyPCBs
- PCBWay PCB Design Software
- Tayda Technologies PCB Design Software
- Elecrow PCB Design Software
- JLCPCB PCB Design
Popular Ham Radio Software & Utilities (Research Capabilities):
- WSJT-X (Digital Communications)
- FLdigi (Digital Modes & Contesting)
- GNU Radio (Software Defined Radio)
- CQRlog (Logging & Contest Management)
- ACLog (Logging & Award Tracking)
- GridTracker (Antenna Pointing & QSL)
- HamSpots.net (Real-Time Band Activity)
- PSK Reporter (Real-Time Signal Reports)
- WSJT (Alternative Digital Mode Software)
- HFLINK (Digital Voice & Data Link)
