Antique radios, Old Time Radios
Polytron-4fach
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Country:
Germany
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| Identical to |
Polytron-4fach
= Politron-4fach
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| First year |
1927
Tube leaflet collection E.Erb Analysis by original leaflets
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| First Source
(s) |
Sep.1927 : Funk Bastler Heft 39
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| Base |
SPECIAL TUBEBASE in general
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 3.5 Volts / If 0.35 Ampere / Direct / Battery = |
| Description |
The Polytron (Politron) brand tubes were made by Dr. G. O. Spanner, GmbH. This company also produced dual triodes and other tubes under the Delta name. The Vierfach-Röhre uses a series filament for the 4 sections which run at .35 amps at 3.5 volts. The plates and grids are made in copper, an unusual element material for this time period. An internal shield, in the form of an X is used between the sections. The base is very special and does require a special matching socket.
Text in other
languages (may
differ)
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| Information source |
Bastelbriefe der Drahtlosen 1927, H.10
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Polytron-4fach: Funkbastler 1928/01
Wolfgang Eckardt
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Polytron-4fach: Bastelbriefe der Drahtlosen, H.10/1927
Wolfgang Eckardt
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