Phaser Digital Mode Transceiver A Single-board, 4-watt Digital Mode SSB Transceiver for 160, 80, 60, 40, 30, 20, 17, 15 or 10 Meters Designed by Dave Benson, K1SWL SDR Cube Transceiver Portable Software Defined Radio ... no PC required! Midnight Ultimate Keyer A full-featured electronic keyer with unprecedented capabilities Hi Rich, thanks very much for your beautiful idea of designing an easy and modest standalone SDR. I have the Teensy + Audio board + TFT + Si5351 (kit by Hans Summers) +encoder runnning, working and producing RF with your current version of the software from Github (thanks for providing the right version of the Si5351 script a few days ago!).