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(!) (#1 311B Single) 311B Western Electric NOS 1967 glass slightly tilted, large getter, in white box (33ma)

(!) (#1 311B Single) 311B Western Electric NOS 1967 glass slightly tilted, large getter, in white box (33ma)

$ 147.99

311B WE NOS (6739=1967) glass slightly tilted, large getter, in white box 

33ma

Gm=3100

 

Tested on Amplitrex

Vplate=180V

Vscreen=135V

Vgrid=-15V

Good Ma = 30ma

Good Gm = 2900

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