Overtone 20
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Fansteel Products: Overtone 20 [Radio] ID = 2330128 1400x756
Select picture or schematic to display from thumbnails on the right and click for download.
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alternative name
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Balkeit || First National | ||||
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Brand |
Overtone | ||||
| Year: 1926 | Category: Broadcast Receiver - or past WW2 Tuner | ||||
| Valves / Tubes | 6: | ||||
| schematic requested | |||||
| Main principle | TRF (Tuned-Radio-Frequency but use of regeneration unknown) |
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| Tuned circuits | 3 AM circuit(s) |
| Wave bands | Broadcast only (MW). |
| Details | |
| Power type and voltage | Storage and/or dry batteries |
| Loudspeaker | - This model requires external speaker(s). |
| Power out | 0.32 W (unknown quality) |
| from Radiomuseum.org | Model: Overtone 20 - Fansteel Products Pfanstiehl, |
| Material | Wooden case |
| Shape | Tablemodel, Box - most often with Lid (NOT slant panel). |
| Dimensions (WHD) | 517 x 257 x 327 mm / 20.4 x 10.1 x 12.9 inch |
| Notes | "Single-tuned Six". One dial (primary tuning control knob). Lighted one-dial tuning is calibrated in Meters. Three side-by-side tuning capacitors, mechanically linked. Balkeit, Balkite, Pfanstiehl are put together to Fansteel. |
| Net weight (2.2 lb = 1 kg) | 9.1 kg / 20 lb 0.7 oz (20.044 lb) |
| Price in first year of sale | 125.00 $ |
| Collectors' prices | |
| External source of data | Ernst Erb |
| Source of data | Radio Collector`s Guide 1921-1932 |
| Mentioned in | Collector's Guide to Antique Radios 4. Edition |
| Literature/Schematics (1) | Radio Manufacturers of the 1920's, Vol. 2 |
All listed radios etc. from Fansteel Products (Pfanstiehl, Pfansteihl, Balkite, Balkeit); Chicago
Here you find 129 models, 71 with images and 60 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
