Antique radios, Old Time Radios
FP400
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Country:
United States of America (USA)
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| Identical to |
FP400
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| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX)
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| Was used by |
Technology / Measurement |
| Filament |
Vf 4 Volts / If 2.25 Ampere / Direct |
| Description |
This tube made for use in the study of electrical discharges in high vacuum.It has a maximum anode voltage of 125 at 25 mA. Main use appears to have been in laborarory/classroom demonstrations.
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Dimensions (WHD)
incl. pins / tip |
x 108 x 45 mm / x 4.25 x 1.77 inch |
| Information source |
Tube Lore (II) p. 213
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Just Qvigstad
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