Antique radios, Old Time Radios
3172a
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| Tube type: |
Vacuum Pentode Controlling (mu) |
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Late but very rare. *** |
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| Identical to |
3172a
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| Similar
Tubes |
Other characteristic (electr. data):
C3f
Other base and data slightly different:
AF3
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| Base |
EU-Telephone 7-pin (G7K)
Top contact with a cap.
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| Was used by |
Military and/or Government |
| Filament |
Vf 4 Volts / If 1 Ampere / Indirect / Specified voltage AND current AC/DC |
| Description |
Hersteller vermutlich Siemens Wien, Ua=250V, Ia=12...0,5mA, Ug2=120V, Ig2=5...0,2mA, Ug1=-2...-20V, S=2,3...0,1mA/V, Ri=600kÙ, Pamax=3W, Pg2max=0,8W
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| Information source |
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3172a: Lorenz Empfänger-Röhren ,9. Auflage
Anonymous 54 Collector
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Just Qvigstad
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| Data Compliance |
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