VK3HN

A very simple tool that generates a pulsing RF signal with pushbuttons to place it where you need it. Intended to test receivers, RF mixers, and drive exciters.

A simple SWR and power monitor, intended for an Arduino Nano and directional coupler built into an AM transmitter.

This is a single-band WSPR beacon that uses an si5351 for frequency synthesis and a ublox 6M GPS unit for time synchronisation.

A controller for a multi-band homebrew SSB/CW transceiver, targeting Arduino Nano and si5351 PLL.

A multiband local CW beacon for receiver testing

A VFO and controller for a radio transceiver using the XIAO MCUs.

Arduino GPS Clock for Uno and Ublox 6m

An Arduino sketch to implement a RealTime clock, which senses your presence using an ultrasonic transducer, and emits the time at minute intervals in morse code.

Library for the Si5351 clock generator IC in the Arduino environment

libs and code

An Arduino and si5351 VFO and Controller, designed for an AM transmitter, suitable for other base transmitters/transceivers.

A basic 3-channel DC-160MHz RF Signal Generator using an Arduino Nano and si5351

Basic CW keyer for Arduino

Simple CW keyer and beacon with simulated chirp and drift, for nostalgia!

PCB for three LM2576 buck regulators.

0..100V DC at 5 amps switching (buck) regulator for AM transmitter.