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(!!!) 311B Western Electric used/like new condition 1960 (25ma)

(!!!) 311B Western Electric used/like new condition 1960 (25ma)

By Tube World

$ 59.99

311B Western Electric used/like new condition (6013=1960) in white box

25ma

Gm=2420

 

Tested on Amplitrex

Vplate=180V

Vscreen=135V

Vgrid=-15V

Good Ma = 30ma

Good Gm = 2900

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