R-390A/URR
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| Year: 1954–1985 | Category: Commercial Receiver (may include amateur bands) | ||||
| Valves / Tubes | 24: 6DC6 6AK5W 6AK5W 6C4 6C4 6C4 6BA6W 6BA6W 6BA6W 6BA6W 6BA6W 6BA6W 6AK6 6AK6 6AK6 5814A 5814A 5814A 5814A 5814A 5814A 5814A 26Z5W 26Z5W 3TF7 0A2 |
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| Main principle | Superhet with RF-stage |
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| Wave bands | Broadcast plus more than 2 Short Wave bands. |
| Details | |
| Power type and voltage | Alternating Current supply (AC) / 115/230 Volt |
| Loudspeaker | - This model requires external speaker(s). |
| Power out | |
| from Radiomuseum.org | Model: R-390A/URR - Collins Radio Company; Cedar |
| Material | Metal case |
| 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 $ |
| Collectors' prices | |
| External source of data | Konrad Birkner |
| Mentioned in | Communications Receivers |
| Literature/Schematics (1) | Shortwave Receivers - Past & Present (3rd ed.) |
Model page created by Konrad Birkner † 12.08.2014. See "Data change" for further contributors.
All listed radios etc. from Collins Radio Company; Cedar Rapids (IA)
Here you find 93 models, 68 with images and 31 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
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collins: R-390A/URR The Y2K Manual;
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Bryce Ringwood
02.Aug.09 |
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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.
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collins: R-390A/URR, Manuals for download
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Eilert Menke
20.Dec.04 |
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http://bama.edebris.com/manuals/military-kg7bz/r390a/ mni tnx to KG7BZ |
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collins: R390A (URR), variants:
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Eilert Menke
23.Apr.04 |
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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. |
End of forum contributions about this model
