So [Todd] has set out to build an Arduino frequency counter for a Kenwood TS-520S HF ham radio. This post (and the video found after the break) doesn’t cover the entire project. It’s rather ...

Most radio circuits are tuned to pretty close tolerances and going from 27 MHz to 50 MHz seemed like quite a leap. The answer? An Arduino and a few other choice pieces of circuitry. In particular ...

This repository contains helpful resources to receive signals transmitted from an Arduino 433 MHz transmitter with an RTL-SDR receiver using GNU Radio. The project consists of two parts. In the first ...

This is a very minimalistic 20meter transceiver Digital Frequency Synthesizer with 0.96 or 1.3 inch 128x64 OLED Display for Ham-radio use. This is a sketch to control a Silicon Labs Si5351a board ...