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2509A5

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ID = 37552
       
Country:
United States of America (USA)
Brand: DuMont Labs, Allen B., Inc.
Tube type:  CRT (cathode ray tube, picture tube) 
Identical to 2509A5
First Source (s)
Nov.1941 : Electron Tube Registration List

Base 7-Pin-Base-general, old, USA
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. 
Information source -- Original-techn. papers.   Electronics, Jan. 1942
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