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ID = 35818
United States of America (USA)
Brand: Raytheon Mfg. Co.; Cambridge, MA
Tube type:  Vacuum Pentode 
Identical to CK5639WA
Similar Tubes
Normally replaceable-slightly different:
Other class quality (otherwise equal):
  5639 ; CK5639

Base Subminiatur-8, with space 1/8, B8D
Filament Vf 6.3 Volts / If 0.45 Ampere / Indirect
Description Wide-band RF or video power amplifier. 3.15W anode dissipation. As class A audio power amplifier it delivers 1W with 150V B+ supply.
Designed to withstand impact accelerations as high as 450G and uniform accelerations up to 1000G.
High-rel version of 5639/CK5639, rated for 80.000 Ft. altitude operation. 
Information source - - Manufacturers Literature   
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8dl_17.png CK5639WA
Emilio Ciardiello

Just Qvigstad
CK5639WA: Manufacturer's Literature
Emilio Ciardiello

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