DeWald 640 (Rider : DeWald 5 P: 16) |
£1.80 (~ $2.20 or €2.10) |
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Country | USA |
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Manufacturer | DeWald Radio Mfg. Corp., Pierce Airo Inc. |
Brand | Pierce Airo |
Model | Model 640 - DeWald Radio Mfg. Corp., |
Year: 1934 | Category: Car Radio, perhaps also + sound player/recorder |
Valves | 6: 6D6 6A7 6D7 75 41 84 |
Technology | Superhet with RF-stage; IF 175 kHz; 2 AF stage(s) |
Tuned Circuits | 6 AM circuit(s) |
Wave Bands | Broadcast only (MW). |
Power type | Storage Battery for all (e.g. for car radios and amateur radios) / 6 Volt |
Source | Book: gernsback Vol: 5 Page: 626 |
Source | Book: rider Vol: 5 Page: 16 |