GEC 4081A CRT Pinout?
 

Can anyone post pin out and data on a gec 4081?

Thanks

Re: GEC 4081A CRT Pinout?
 

Hi,

GEC valve manual, part 1, Aug 1957, edition 2 states:

4081 and 4081A use a B9 base, with the following pinout:

1 = X1
2 = Y1
3 = A2
4 = H, K
5 = H
6 = G
7 = A1,3
8 = Y2
9 = X2

The indexing pip is between pins 4 & 5.

Looks like an oscilloscope tube, with a screen diameter of 2.75", green phosphor, 4V @ 0.8V heater, 80 - 200V A1 volts, 400 - 800 A3 volts, -30V max G1 cut-off (max), deflection sensitivity (mm/V) X = 150/VA2; Y = 150/VA2.

Hope this helps.

Regards,

Dazzlevision