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ID = 48958
Tube type:  Transmitting Triode, air cooled   UHF 
Identical to CV977
Similar Tubes
Multiple differences or of other kind:

Filament Vf 6.3 Volts / If 2.7 Ampere / Half indirect
Description Pair of CV55 UHF transmitting triodes. Tubes are matched for Ia readings not differing more than 10mA at Va=100V and Vg=0V. 
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CV977: Manufacturer's Literature
Emilio Ciardiello


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