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

Category: SKU: TOY390834

$42.00 $139.99

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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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