Antique radios, Old Time Radios
CV28
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Country:
Great Britain (UK)
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| Identical to |
CV28
|
| Similar
Tubes |
Normally replaceable-slightly different:
2J121E
; 3J/121E
; ACT9
Heater different:
3J/122E
; CV6057
Multiple differences or of other kind:
CV1994
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| Base |
TRANSMITTING & Power-TUBES/VALVES in gen
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| 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.
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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.
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CV28: Manufacturer's Literature
Emilio Ciardiello
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