The radio amateur's handbook
Inbunden bok. The American Radio Relay League, Inc. Twenty fifth edition uppl. 1948. 752 sidor.
Gott skick. 608 sidor+ 144 katalogsidor. The standard manual of amateur radio communication. Measuring equipment, Antennas, Transmitters, Receivers, Radiotelephony, Power supplies, Electrical laws and circuits, mm.