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CV28

Information - Help 
ID = 17528
       
Country:
Great Britain (UK)
Brand: Standard Telephones and Cables Ltd. (STC); London, Foots Cray
Tube type:  Transmitting Triode, air cooled   VHF 
Identical to CV28
Similar Tubes
Normally replaceable-slightly different:
  2J121E ; 3J/121E ; ACT9
Heater different:
  CV6057
Multiple differences or of other kind:
  CV1994

Base TRANSMITTING & Power-TUBES/VALVES in gen
Filament Vf 16 Volts / If 22 Ampere / Direct
Description

Forced air cooled for 1.1kW dissipation, 800W with convection/radiation cooling. Up to 15MHz full ratings, up to 80MHz with reduced input.

Plain tungsten filament. Heater voltage is nominal as actual is marked individually on the valve.

The STC reference type is 3J/121E, MOV code is ACT9.


The CV28 spec applies to the tube complete with finned radiator. The tube without heat radiator should be referred to as CV1994, even if the specimen in the picture comes without radiator and is marked as CV28. Probably it was seen as a replacement unit for a complete CV28 tube.

 
Dimensions (WHD)
incl. pins / tip
181 x 355 x mm / 7.13 x 13.98 x inch
Weight 950 g / 33.51 oz
Information source Taschenbuch zum Röhren-Codex 1948/49   
-- Original-techn. papers.   
 
cv28_a.jpg
CV28: Private collection
Emilio Ciardiello

 
cv28_1.png
CV28: Manufacturer's Literature
Emilio Ciardiello



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