ВС-221-AE-
Precision heterodyne frequency meter designed to
measure or radiate radio-frequency impulses between
125 kHz and 20 MHz. Made by Philco Corporation, USA,
from 1943. Supplied to the USSR by The Lend-Lease
Act in 1942-1944.
More details on BC-221-AE may be found at radiomuseum.org
site.
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