Antique radios, Old Time Radios
2509A5
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Country:
United States of America (USA)
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| Identical to |
2509A5
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| First Source
(s) |
Nov.1941 : Electron Tube Registration List
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| Base |
7-Pin-Base-general, old, USA
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| Filament |
Vf 2.5 Volts / If 2.1 Ampere / Half indirect |
| Description |
5" medium-persistance green fluorescent CRT intended for oscillographic. Electrostatic focus and deflection. Each pair of deflection plates has one connected to one side cap and the opposite to the base. Typical operation: 500V on A1, 1500V on A2, -80V grid cutoff.
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| Information source |
-- Original-techn. papers. Electronics, Jan. 1942
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| Data Compliance |
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