20-B
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Select picture or schematic to display from thumbnails on the right and click for download.
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Year:
1933
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Category: Broadcast Receiver - or past WW2 Tuner |
| Valves / Tubes |
5:
6A7 78 77 43 25Z5
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| Main principle |
Superheterodyne (common); 1 AF stage(s)
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| Tuned circuits |
5 AM circuit(s) |
| Wave bands |
Broadcast only (MW). |
| Details |
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| Power type and voltage |
AC/DC-set / 110 Volt |
| Loudspeaker |
Electro Magnetic Dynamic LS (moving-coil with field excitation coil) |
| Power out |
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| from Radiomuseum.org |
Model: 20-B - Halson Radio Mfg. Co.; New |
| External source of data |
Ernst Erb |
| Circuit diagram reference |
Rider's Perpetual, Volume 4 = ca. 1934 and before |
All listed radios etc. from Halson Radio Mfg. Co.; New York City (NY)
Here you find 105 models, 35 with images and 64 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
