Homebrewing projects and kits such as DDS, frequency counters, LCD power meter, and sound card inter
K3WWP's activities in ham radio, including CW, QRP, contesting, homebrewing, award hunting, and DXin
John Coppens provides information about antennas, propagation, chirping, balloons, and satellites. L
A ham radio exam tool with questions for all three FCC written exams, and three ways to learn Morse
Homebrewing of transceivers, receivers, transmitters and test equipment. [Italian - English]
Technical information for HF, remote-control and digital decoding devices, plus a CPU-based hardware
A blog with QRP, 20m, 6m and 2m homebrew projects completed with a SARC news feed.
A resource for valve and early transistor portable radios. Includes a section with old circuits and
