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R-391/URR ; Collins Radio (ID = 1026334) Military R-391/URR ; Collins Radio (ID = 1026336) Military
R-391/URR ; Collins Radio (ID = 1026349) Military
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R-391/URR ; Collins Radio (ID = 1026334) Military
Collins Radio: R-391/URR [Military] ID = 1026334 850x637
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For model R-391/URR, Collins Radio Company; Cedar Rapids (IA)
Country:  United States of America (USA)
Manufacturer / Brand:  Collins Radio Company; Cedar Rapids (IA)
Year: 1952 ? Category: Military Equipment (not Re, Tr or RXT)
Valves / Tubes 33:
Main principle Superhet, double/triple conversion
Wave bands Broadcast plus more than 2 Short Wave bands.
Power type and voltage Alternating Current supply (AC) / 115; 230 Volt
Loudspeaker - This model requires external speaker(s).
Power out
from Model: R-391/URR - Collins Radio Company; Cedar
Material Metal case, TUBES VISIBLE
Shape Rack
Dimensions (WHD) 19 x 10.5 x 14.75 inch / 483 x 267 x 375 mm
Notes Autotune (8 channels, Moore says 7 position autotune!) version of the R-390/URR. IF: 9-18 MHz, 2-2.5 MHz, 455 kHz. BFO; S-Meter; 500 to 32,000 kHz. Front panel differs from R-390 by an additional knob on the left side directly below the bandwith knob.
Net weight (2.2 lb = 1 kg) 78 lb (78 lb 0 oz) / 35.412 kg
Source of data Shortwave Receivers - Past & Present (3rd ed.)
Mentioned in Communications Receivers
Literature/Schematics (1) TM 11-863

Model page created by Norman Ryan. See "Data change" for further contributors.

All listed radios etc. from Collins Radio Company; Cedar Rapids (IA)
Here you find 94 models, 69 with images and 31 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.