Check out the WSPR beacon and other kits at https://qrp-labs.com https://qrp-labs.com, great stuff for the radio amateur. I have built most of their kits, and t

Check out the WSPR beacon and other kits at https://qrp-labs.com https://qrp-labs.com, great stuff for the radio amateur. I have built most of their kits, and the owner is a fantastic fellow.