Antique radios, Old Time Radios
7B8LM
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Country:
United States of America (USA)
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Brand:
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Common type USA tube/semicond. |
| Tube type: |
Pentagrid-Converter (Heptode) |
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Ca. 1925 up to 1945 no serial production. For
instance only development samples. ***** |
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| Identical to |
7B8LM
= CV883
= VT-208A
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| Similar
Tubes |
Other shape (e.g. bulb type):
7B8
Normally replaceable-slightly different:
VT-208
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| First Source
(s) |
13.Mar.1940 : Electron Tube Registration List
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| Base |
Loctal-8, B8G (Sylvania, 1938) (Codex=We)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 6.3 Volts / If 0.3 Ampere / Indirect / Specified voltage AND current AC/DC |
| Description |
Metal bulb, loctal base.
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| Information source |
Taschenbuch zum Röhren-Codex 1948/49
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7B8LM: ARRL Handbook 1972
Anonymous 10 Collector
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Just Qvigstad
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