The Metropolitan 224D Vibro-Power
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alternative name
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American Bosch Magneto | ||||
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Brand |
Essex | ||||
| Year: 1932 | Category: Broadcast Receiver - or past WW2 Tuner | ||||
| Valves / Tubes | 8: 239 237 239 239 239 71A 52 52 | ||||
Conflicting model year with tube data. |
The model date contradicts tube dates. [ 52 (1933)] |
| Main principle | Superhet with RF-stage; ZF/IF 175 kHz |
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| Tuned circuits | 7 AM circuit(s) |
| Wave bands | Broadcast only (MW). |
| Details | |
| Power type and voltage | Direct Current supply (DC) / 105-125 Volt |
| Loudspeaker | Electro Magnetic Dynamic LS (moving-coil with field excitation coil) |
| Power out | |
| from Radiomuseum.org | Model: The Metropolitan 224D Vibro-Power - United American Bosch Magneto |
| External source of data | Ernst Erb |
| Circuit diagram reference | Rider's Perpetual, Volume 9 = 1938 and before |
| Literature/Schematics (1) | Riders 2-14, 9-1 |
| Literature/Schematics (3) | -- Original prospect or advert (Radio-Retailing, September 1932) |
All listed radios etc. from United American Bosch (Magneto Corporation); Springfield (MA)
Here you find 412 models, 158 with images and 269 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
