Antique radios, Old Time Radios
3171a
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Tube type: |
Vacuum Pentode |
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Late but very rare. *** |
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Tube ID = 33272 |
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| Identical to |
3171a
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| Similar
Tubes |
Other base and data slightly different:
AF7
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| Base |
EU-Telephone 7-pin (G7K)
Top contact with a cap
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| Filament |
Vf 4 Volts / If: 1 Ampere / -: Indirect / -: Parallel / series AC/DC / |
| Description |
Hersteller vermutlich Siemens Wien, Ua=250V, Ia=10mA, Ug2=150V, Ig2=4mA, Ug1=-2V, S=3,5mA/V, Ri=750kÙ, Pamax=3W, Pg2max=0,8W
Text in other
languages (may
differ)
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| Literature |
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Lorenz Empfänger-Röhren ,9. Auflage
Michael Sigmund
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| No further Information
for |
3171a |
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