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VT-28

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ID = 13149
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: RCA (RCA Victor Co. Inc.); New York (NY) 
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
Identical to VT-28 = 24 = CV936
Similar Tubes
Normally replaceable-slightly different:
  22AC ; 24A ; RENS324

Base UY-Base, 5 Pins (USA, April 1927) (Codex=Ha) Top contact with a cap.
Was used by Military and/or Government
Filament Vf 2.5 Volts / If 1.7 Ampere / Indirect
Dimensions (WHD)
incl. pins / tip
x 123 x 45 mm / x 4.84 x 1.77 inch
Weight 50 g / 1.76 oz
Information source Taschenbuch zum Röhren-Codex 1948/49   
Tube Lore (II)   p. 180
Babani, International Radio Tube Encyclopaedia
Universal Vade-Mecum, Electron Valves and Semiconductor Devices

448_5.png VT-28: Telefunken Werkstattbuch
Wolfgang Bauer

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