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ID = 35618
United States of America (USA)
Brand: Raytheon Mfg. Co.; Cambridge, MA
Tube type:  Vacuum Pentode 
Identical to CK587

Base Subminiatur (wire-ends, flat) B5A
Filament Vf 0.625 Volts / If 0.01 Ampere / Direct
Description T 1-1/2 x 2, flat press, electrometer pentode. 0.1 picoampere max, grid current. 
Information source - - Manufacturers Literature   Raytheon, Feb. 1963

usa_raytheon_ck587_outline.png CK587: raytheon data book February 1963
Harald Giese

Just Qvigstad
CK587: Manufacturer's Literature
Emilio Ciardiello

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