• Year
  • 1954–1985
  • Category
  • Military Receiver
  • Radiomuseum.org ID
  • 68887

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Number of Tubes
  • 24
  • Main principle
  • Superhet with RF-stage
  • 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).
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: R-390A/URR - MILITARY U.S. different makers
  • Shape
  • Rack
  • Dimensions (WHD)
  • 19 x 10.5 x 16 inch / 483 x 267 x 406 mm
  • Notes
  • AM/CW/MCW; dual/triple conversion; (32) 1-MHz bands; xtal and mech. filter. 54000 sets made by Collins and other manufacturers as well Motorola, Stewart-Warner, EAC, Capehart, AMELCO, Fowler, Teledyne, Dittmore-Freimuth and Helena Rubenstein (last was original, but relabled Collins).
  • Net weight (2.2 lb = 1 kg)
  • 29.5 kg / 64 lb 15.6 oz (64.978 lb)
  • Price in first year of sale
  • 2,500.00 $
  • External source of data
  • Konrad Birkner

 Collections | Museums | Literature


Forum contributions about this model: MILITARY U.S.: R-390A/URR

Threads: 3 | Posts: 3

Having to pull the RF Deck to clean the bandchange switch wafers (a chore that I seem to have to do every two tyears or so) reminded me of the need to re download the Y2K manual  http://www.hausernet.com/r390a/ . This is not the original technical manual mentioned in previous posts.

Thanks to the authors for putting this together. Apologies to forum members who may have this revised manual with some colour pictures, but it may be of interest to new owners.


Bryce Ringwood, 02.Aug.09

Weitere Posts (1) zu diesem Thema.

R-725 is a direction-finding set with an IF strip similar to the R-390, developed by Motorola and built by Servo and Arvin. No more than 300 sets produced.

R-1274/GRC-129 model is a special variant, widely in use by the NASA for the APOLLO effort.

For further information see Fred Osterman: Shortwave-Receivers - past and present.

Eilert Menke, 23.Apr.04

Weitere Posts (1) zu diesem Thema.