HOME-BUILDING AMATEUR RADIO EQUIPMENT

Homebuilding with vacuum tubes 40 years ago hams built reasonably good transmitters and receivers in their basements. A well-built homebrew could cover all the high frequency (HF) bands (1.8 to 30 MHz). Best of all, its signal didn’t embarrass you on the air. Homebrew CW and AM phone were routine. On the

  Receiver, Transmitter, Vacuum