Radio Circuits Blog
This site provides schematics of various radio projects that you can experiment yourself.
Tuesday, 3 February 2026
27MHz AM Transmitter Circuit for hobbyists
27MHz AM Transmitter Circuit for hobbyists: Explore the classic 27MHz AM Transmitter circuit. Learn about its oscillator, modulation, and power stages to build your own radio projects.
DIY Active Antenna: Boost Weak HF/VHF Signals
DIY Active Antenna: Boost Weak HF/VHF Signals: DIY Active Antenna for superior HF and VHF reception! This DIY electronics project amplifies weak signals to lift hard-to-hear broadcasts out of the noise
Monday, 2 February 2026
Mini Radio Pocket SI4735 Dual Core – Latest Firmware Update Brings EiBi Extensions & Power Saving Mode
Mini Radio Pocket SI4735 Dual Core – Latest Firmware Update Brings EiBi Extensions & Power Saving Mode: New Pocket SI4735 firmware adds EiBi transmitter details, distance calculation, manual time entry and eco mode that significantly extends ESP32-S3 battery life.
sBitx v5.3: A Detailed Look at the New Software Release
sBitx v5.3: A Detailed Look at the New Software Release: A breakdown of the sBitx v5.3 release, focusing on the new touch-friendly UI, xOTA logging features, and hardware protection
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