SolderSmoke Daily News: Homebrew WSPR from W3PM

March 3, 2009 | Amateur Radio | By: Mark VandeWettering

Bill posted today about W3PM’s design for a dedicated WSPR beacon transciever. It’s very slick: basically a crystal oscillator that can be mixed with the signal from a PC sound card, then piped through a narrow crystal filter and through an amplifier chain into an antenna. Check out the PDF, it’s quite nice.

SolderSmoke Daily News: Homebrew WSPR from W3PM