Antique radios, Old Time Radios
5-443H
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Country:
Netherlands
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| Identical to |
5-443H
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| Similar
Tubes |
Normally replaceable-slightly different:
E443H
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| Production stop |
Feb.1938 |
| Base |
Europe 5-Pin , B5 (Eu O, F, O5A) 1928
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| Filament |
Vf 4 Volts / If 1.2 Ampere / Half indirect / Specified voltage AND current AC/DC |
| Description |
To avoid the Philips penthode patent, Thermion calls it a tetrode because the surpressor grid is connected to the grid instead of the kathode/filament. Nevertheless, this is a plug-in replacement for the E443H.
Literature: magazine Thermion Nieuws of may-June 1935.
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| Information source |
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5-443H
Peter den Boer
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Just Qvigstad
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5-443H: own collection
Peter den Boer
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