640
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Niesen,: 640 [Radio] ID = 2511436 1400x1080
Select picture or schematic to display from thumbnails on the right and click for download.
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| Year: 1939/1940 | Category: Broadcast Receiver - or past WW2 Tuner | ||||
| Valves / Tubes | 6: ECH3 EBF2 EF9 EL3 EM4 EZ4 | ||||
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| schematic requested | |||||
| Main principle | Superheterodyne (common); ZF/IF 472 kHz |
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| Details | |
| Power type and voltage | Alternating Current supply (AC) |
| Loudspeaker | Presumably Dynamic Loudspeaker (moving coil) |
| Power out | |
| from Radiomuseum.org | Model: 640 - Niesen, Constructions |
| External source of data | E. Erb 3-907007-36-0 |
| Source of data | Radiokatalog Band 2, Ernst Erb |
| Circuit diagram reference | Die Tungsram-Tabellen führen das Modell auf. |
All listed radios etc. from Niesen, Constructions électriques et mécaniques (CEM); Neuchâtel
Here you find 80 models, 45 with images and 53 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
