(!!!) 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)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/products/1_c5b4f3a2-74eb-4cb4-9c6a-2702a4b02165.jpg?v=1636766659){kind=link}
 311B Western Electric used/like new condition 1960 (25ma) "Pin It")