Homebrew Superheterodyne 80m Ham Radio receiver featuring hand-wound IF and BFO coils. An excellent learning tool, fashioned after the 1932 QST radio of the Great...
Ham Radio QRP CW all band transceiver. Building blocks include PIC control board, AD9851 DDS synthesizer, Bandpass filters, T / R switch, AD8008 RF amp,...
Shortwave Superheterodyne Receiver, 7MHz SSB/CW/AM (Gain-Adjustable & Tunable 1-RF Stage, 2-IF Stages, with BFO and Product-Detector for Receiving SSB/CW and S-Meter, using 10-FETs, 2-Tr and...