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ID = 25190
Tube type:  Beam Power Tube 
Identical to 6893
Similar Tubes
Heater different:

Base Octal (Int.Octal, IO) K8A, USA 1935 Top contact with a cap.
Filament Vf 12.6 Volts / If 0.4 Ampere / Indirect
Dimensions (WHD)
incl. pins / tip
33 x 93 x mm / 1.30 x 3.66 x inch
Information source - - Manufacturers Literature   RCA Brochure 1966

6893_so.png 6893: ARRL Handbook 1972
Anonymous 10 Collector

Just Qvigstad
6893: RCA Transmitting Tubes TT-5
Emilio Ciardiello


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