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504A; Watkins Johnson (ID = 317400) Receiver-C 504A; Watkins Johnson (ID = 317401) Receiver-C
504A; Watkins Johnson (ID = 317402) Receiver-C  
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504A; Watkins Johnson (ID = 317400) Receiver-C
Watkins Johnson: 504A [Receiver-C] ID = 317400 933x196
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For model 504A, Watkins Johnson Company, Gaithersburg (MD)
Country:  United States of America (USA)
Manufacturer / Brand:  Watkins Johnson Company, Gaithersburg (MD)
Year: 1965 ? Category: Commercial Receiver (may include amateur bands)
Semiconductors (the count is only for transistors) 38:
Main principle Super-Heterodyne (Super in general); ZF/IF 21,4 kHz
Wave bands Wave Bands given in the notes.
Power type and voltage Alternating Current supply (AC) / 115/230 Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 7 cm = 2.8 inch
Power out 0.1 W (unknown quality)
from Model: 504A - Watkins Johnson Company,
Material Metal case
Shape Rack
Dimensions (WHD) 19 x 3.5 x 15.5 inch / 483 x 89 x 394 mm
Notes VHF Receiver 54 - 260 MHz in one band. AM, FM and CW reception. Two IF bandwidths: 10 and 300 kHz. Xtal marker. Made by CEI (Communications Electronics Inc.). In the late 1960s, Watkins Johnson (WJ) purchased CEI.
Net weight (2.2 lb = 1 kg) 6 kg / 13 lb 3.5 oz (13.216 lb)
Price in first year of sale 1'750.00 $
Source of data - - Data from my own collection

Model page created by Juhani Makivuoti † 21.09.13. 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.