Antique radios, Old Time Radios
A537
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Country:
Great Britain (UK)
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| Identical to |
A537
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| Similar
Tubes |
Normally replaceable-slightly different:
A1178
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| Base |
Side contacts.
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| Filament |
Vf 4 Volts / If 0.4 Ampere |
| Description |
Special for microphone amplifiers. Gm=1.55mA/V. Amp Factor=15.5, Z=10k, Va<150, Ia=3.3mA at Vg=-6. (Price 3.8EUR in 1938)
Replaced by the A1178.
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| Information source |
Taschenbuch zum Röhren-Codex 1948/49
- - Manufacturers Literature
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A537: MARCONI RECEIVIN VALVES, LONDON, 1938
Jose Casas-Avalos
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Collection of
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