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Country:  United States of America (USA)
Manufacturer / Brand:  Watkins Johnson Company, Gaithersburg (MD)
Year: 1992–1998 Category: Commercial Receiver (may include amateur bands)
Semiconductors (the count is only for transistors) Semiconductors present.
Main principle Superhet, double/triple conversion
Wave bands Broadcast, Long Wave and more than two Short Wave bands.
Details Radio Control (+Remote Wire etc)
Power type and voltage Other, details in remarks or not known.
Loudspeaker - For headphones or amp.
Power out
from Model: WJ-8721 - Watkins Johnson Company,
Material Metal case
Shape Rack
Dimensions (WHD) 31 x 237 x 335 mm / 1.2 x 9.3 x 13.2 inch
Notes computer controlled receiver, 12 receivers fit in a 19" rack; 5 - 30000 kHz, AM, CW, USB/LSB, ISB, FM; completely computer controlled, 1 Hz tuning steps, DSP IF.
Net weight (2.2 lb = 1 kg) 2.2 kg / 4 lb 13.5 oz (4.846 lb)
Source of data Shortwave Receivers - Past & Present (3rd ed.)

Model page created by Martin Bösch. See "Data change" for further contributors.

All listed radios etc. from Watkins Johnson Company, Gaithersburg (MD)
Here you find 18 models, 8 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.