12SK7GT Tungsol used/tests like new 1940's, 50% of base is rusted/tarnished (8.6ma)
$ 4.99
12SK7GT Tungsol used/tests like new 1940's, 50% of base is rusted/tarnished
8.6ma
Gm=1900
Tested on Amplitrex:
Good used Ma range 7.5 - 9ma
Good used GM range 1500-1800
Vplate = 250V
Vscreen = 100V
Vgrid = -3V
NOS Ma = 8-9ma
NOS GM = 1900-2000
for:
Collins TCS14 1944
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