Antique radios, Old Time Radios
525
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Country:
United States of America (USA)
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Brand:
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DeForest-Tubes |
| Tube type: |
TRANSMITTING TUBE (general) UHF |
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Ca. 1925 up to 1945 no serial production. For
instance only development samples. ***** |
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| Identical to |
525
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| Similar
Tubes |
Differences not known by us:
825_SYLVANIA
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| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX)
Sidecontact and top contact.
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| Was used by |
Transmittertube (Radio) |
| Filament |
Vf 7.5 Volts / If 2.5 Ampere / Direct |
| Description |
Normal plate voltage 425 volts, bias 35 volts
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Dimensions (WHD)
incl. pins / tip |
x 159 x 70 mm / x 6.26 x 2.76 inch |
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Just Qvigstad
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Collection of
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| Data Compliance |
More Information |
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