UR4UCC's blog

Online on six bands (rx only) - 1.8, 3.5, 7, 10, 14 and 18 MHz

Hardware: Raspberry PI 3 model B + 2xSTM32F373 boards + six receivers (with SI5351 DDS).
Documentation is here: https://github.com/sergz72/wspr_modules

My experimental WSPR system for 80m band - Intel Edison + STM32F373 (sound input, DDS control) + DDS (SI5351) + simple 80M receiver.