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(!!) (Good Value Pair) 311B WE used/good, faded getters 1960 and 1967 (28ma and 33ma)
(!!) (Good Value Pair) 311B WE used/good, faded getters 1960 and 1967 (28ma and 33ma)
$ 89.99
1 pair) 311B WE used/good faded getters
1 tube) 28ma Gm=2700 (6039=1960)
1 tube) 33ma Gm=2950 (6713=1967)
Tested on Amplitrex
Vplate=180V
Vscreen=135V
Vgrid=-15V
NOS Ma = 30ma
NOS Gm = 2900
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