Compact Arduino, si5351 VFO/BFO/CW CO/Controller/Keyer

A compact build of the popular Arduino Nano, si5351 PLL VFO, with all the features you need to control a homebrew single or multiband SSB CW transceiver. Targets Raduino by VU2ESE/ HFSignals. Code and build by Paul VK3HN. Code is at: See for schematics, homebrew rigs, projects, SOTA and ideas.