(!!!) 311B Western Electric used/like new condition 1960 (25ma)
$ 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
See more: vacuum tube
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 311B Western Electric used/like new condition 1960 (25ma) "Pin It")
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