Antique radios, Old Time Radios
920
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Country:
United States of America (USA)
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| Identical to |
920
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| First Source
(s) |
20.Dec.1938 : -- Original-techn. papers.
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| Filament |
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| Description |
Spectral response: S-1. Twin phototube for sound reproduction. Side-on type. Wavelength of maximum spectral response is 8000 +/- 1000 angstromes. This type makes use of a quarter-cylindrical photocathode. Anode-Supply voltage is 90 volts.
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Dimensions (WHD)
incl. pins / tip |
30 x 102 x mm / 1.18 x 4.02 x inch |
| Weight |
31 g / 1.09 oz |
| Tube prices |
2 Tube prices (visible for members
only)
|
| Information source |
Taschenbuch zum Röhren-Codex 1948/49
- - Manufacturers Literature RCA Phototubes and Photocells PT-60
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920: RCA Phototubes 1941
David Erali
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920: elektron taschenbuch 1952
Heinz Höger
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920: RCA
Patrice Zeissloff
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