56 Sylvania branded RCA NOS 1946 (6.0ma)
By Tube World
$ 16.99
56 Sylvania branded RCA NOS 1946
6ma
Gm=1600
Tested on Amplitrex:
Vplate=250V
Vgrid=-13.5V
Iplate good range = 4.5-5.5ma
Gm=1400
(Vfilament = 2.5 volts)
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