Radio Circuits Blog
This site provides schematics of various radio projects that you can experiment yourself.
Monday, 20 April 2026
The zBitx v2 Has Arrived: Efficiency, Built-in EFHW, and a Wi-Fi Revolution
The zBitx v2 Has Arrived: Efficiency, Built-in EFHW, and a Wi-Fi Revolution: Discover the zBitx v2 by Ashhar Farhan (VU2ESE). Explore new hardware features like the built-in EFHW transformer, LDMOS power amplifier, and user interface.
Sunday, 19 April 2026
Khanfar Spectrum Analyzer: A Free RTL-SDR Tool Suite Worth Knowing
Khanfar Spectrum Analyzer: A Free RTL-SDR Tool Suite Worth Knowing: A detailed look at the Khanfar Spectrum Analyzer free RTL-SDR tools covering real-time FFT, wideband scanning, CFAR , IQ recording, and radio direction finding
Thursday, 16 April 2026
Build a Simple FM Band Transmitter Circuit
Build a Simple FM Band Transmitter Circuit: This simple FM band Transmitter circuit offers an excellent starting point for beginners can build this transmitter using common electronic components.
Want to build an FM transmitter from scratch? 🎙️📡
This simple circuit uses a single 2N2222A transistor and a 9V battery to create a functional FM band broadcaster. A great weekend project for learning about tank circuits and frequency modulation!
Schematic and build guide:
Mini FM Radio Transmitter
Mini FM Radio Transmitter: FM Radio Transmitter takes your voice from a microphone and turns it into a r signal. Then, this radio signal can be picked up by any standard FM radio nearby.
Build your own tiny radio station! 🎙️📡
This Mini FM Radio Transmitter circuit is a great way to learn about oscillators, tank circuits, and RF modulation. Simple components, 9V powered, and easy to tune.
Details and schematic here:
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