WSPR signal improvement
In my last post, I mentioned a WSPR experiment based on Raspberry Pi and the QRPi module. At that moment, the QRPi was connected directly...
WSPR using Raspberry Pi
Recently, I put into operation a 100 mW WSPR transmitter, based on the QRPi shield (https://www.tapr.org/pdf/DCC2015-QRPi-HA7DCD-1.pdf),...
SSTV QSOs using QRP
Three SSTV QSOs succeeded today, using FT-817 and a random wire antenna, helped by a LDG Z817 autotuner.