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ID = 15178
United States of America (USA)
Developer: Heintz & Kaufman Ltd. (Gammatron); San Francisco, CA 
Tube type:  Transmitting Triode, air cooled   VHF 
Identical to 3C24 = VT-204 = 24-G = 25TG = CV789 = B1109 = HK24G = 24-G-Gammatron
Similar Tubes
Different connections:
  3C34 ; HK24
First Source (s)
06.Sep.1945 : Electron Tube Registration List 434

Base UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=Bt) Sidecontact and top contact.
Was used by Transmittertube (Radio)
Filament Vf 6.3 Volts / If 3 Ampere / Direct

25W VHF transmitting triode, grid from side contact.

Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
37 x 107 x mm / 1.46 x 4.21 x inch
Tube prices 2 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   
Tube Lore (II)   p. 85
Babani, International Radio Tube Encyclopaedia
Universal Vade-Mecum, Electron Valves and Semiconductor Devices

3c24_so.png 3C24: ARRL Handbook 1972
Anonymous 10 Collector

Just Qvigstad
3C24: Manufacturer's Literature
Emilio Ciardiello

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