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ID = 60818
Tube type:  Vacuum Pentode   RF/IF-Stage 
Identical to 6P10
Predecessor Tubes SP61   CV138  
Successor Tubes 6P12  

Was used by Telephony
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect

High-rel British GPO pentode developed for use in submarine telephone repeaters. 1" dia. by 2½" double ended bulb. Design derived from the SP61 and the CV138 pentodes.

Production started from 1951.

Information source -- Original-techn. papers.   Bell Tech. Journal, Jan. 1957


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