Antique radios, Old Time Radios
4HA7
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Country:
United States of America (USA)
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| Identical to |
4HA7
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| Base |
Duodecar 12-pin, B12C Glass (USA 1961)
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| Filament |
Vf 4 Volts / If 0 Ampere / Indirect / Specified current AC/DC ~ = (Series working) |
| Description |
Die Trioden sind nicht gleich! (Für Fernsehgeräte) Triode I: Anode: 250 V, 2,75 Wmax., 10,5mA; Gitter: -8,5V, S: 2,2mA/V; µ: 17-fach
Triode II: Anode: 250 V, 0,3 Wmax., 1,2mA; Gitter: -2V, S: 1,6mA/V; µ: 100-fach.
Pin 7 und 10 intern verbunden
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| Tube prices |
1 Tube prices (visible for members
only)
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| Information source |
Essential Characteristics, GE 1973
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4HA7: Essential characteristics
Peter Hoddow
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Just Qvigstad
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Collection of
Collection of a member from FIN |
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