Antique radios, Old Time Radios
1P25A
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Country:
United States of America (USA)
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| Identical to |
1P25A
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| First year |
03.Nov.1944
-- Original-techn. papers. RCA RMA #390
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| First Source
(s) |
03.Nov.1944 : -- Original-techn. papers. RMA 930
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| Predecessor Tubes |
1P25
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| Base |
SPECIAL TUBEBASE in general
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| Was used by |
Military and/or Government |
| Filament |
|
| Description |
Infrared image converter used in WWII night vision scopes. Photocathode at one end uses electron-optical methods to focus a reduced fluorescent image at small end. Grid 1 accelerating electrode 10 volts, max 15. Grid 2 focusing electrode 100 volts max 250. Grid 3 accelerating electrode 575 volts 800 max. Grid 4 high voltage collector-grid electrode 4100 volts 4500 max.
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Dimensions (WHD)
incl. pins / tip |
x 114 x 41 mm / x 4.49 x 1.61 inch |
| Weight |
63 g / 2.22 oz |
| Information source |
Tube Lore (I) Page 42
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Collection of
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