Monthly Archives: January 2017

QRPp WSPR and FSKCW tests on 40m using the U3

I recently built the QRP-Labs LPF switching board plus a couple of extra filters for 80m and 40m. I’d had these kits gathering dust for probably 12 months plus. Other projects had taken priority and I’d not really run any … Continue reading

Posted in Blog, QRSS / WSPR / QRP