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(!!) (#1 311B Single) 311B Western Electric NOS 1956 (31.6ma)

(!!) (#1 311B Single) 311B Western Electric NOS 1956 (31.6ma)

$ 158.88

311B Western Electric NOS (5652=1956) original box

31.6ma

Gm=3000

 

Tested on Amplitrex

Vplate=180V

Vscreen=135V

Vgrid=-15V

Good Ma = 30ma

Good Gm = 2900

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