DIY Antennas, QRP, SDR & Ham Radio Projects from VU3DXR
If your receiver needs a higher level of signal across the entire matching network, this signal booster circuit can furnish the solution. This Signal booster circuit, built around a few transistors and support components, offers an RF gain of about 12 to 18 dB from about 100 kHz to over 30 MHz
If you’re working with RF circuits and need to improve signal reception or create a compact antenna solution, the Signal Grabber circuit is an excellent project to tackle. This clever design creates a short pull-up antenna that delivers impressive performance in a small package. The Signal Grabber is a specialized RF circuit designed to create […]
Tired of static on your AM or shortwave radio? Do you struggle to hear distant stations? There is a simple fix. You can build a special antenna that makes radio signals much stronger. This guide shows you how to build a DIY active antenna. It is a fun project that can give you crystal-clear reception. […]
This crystal tester method lets you confirm a crystal’s “active” status by comparing its output to a known good crystal available
Simple 80 m CW transmitter using a 3.58 MHz ceramic resonator for frequency stability and MOSFET power stage — ideal first HF QRP build for beginners
A crystal controlled FM transmitter is a radio frequency (RF) circuit that uses a quartz crystal oscillator to generate a stable, precise frequency for FM radio transmission. Unlike simple LC oscillator circuits, crystal-controlled transmitters offer superior frequency stability and accuracy, making them ideal for applications requiring consistent performance.
Are you interested in radio electronics? This simple FM band transmitter circuit offers an excellent starting point for beginners and hobbyists. You can build this transmitter using common electronic components and start broadcasting on the FM band.
Explore alternative firmware options for the ATS-Mini DSP radio, including G8PTN, ESP32-SI4732, and Goshante builds. Unlock enhanced usability, advanced DSP features, and customization beyond the stock firmware
Explore alternative firmware options for the ATS-Mini DSP radio, including G8PTN, ESP32-SI4732, and Goshante builds. Unlock enhanced usability, advanced DSP features, and customization beyond the stock firmware.
Build the Commando AM transmitter — a crystal-controlled three-transistor AM circuit with oscillator, buffer, and RF power stages delivering stable modulation for HF experimentation