(!!!!) (Best Value Single) 10 Sylvania "engraved base" 1930's used/good (23ma)
$ 69.99
10 Sylvania "engraved base" 1930's used/good - "10" etched on base
23ma
Gm=1800
Vplate=300V
Vgrid=-15V
Good mA range 20-30ma
Good Gm range 1700-2000
General Information
(Filament=7V @ 1.2A, Vplate=220V, Vgrid=-7V, Iplate=25ma, Mu=6, Rp=6Kohms)
(The VT-25 is built exactly the same as a VT-52, but the plate and grid are spaced differently yielding ifferent Mu factors and plate resistance)
See more: vacuum tube
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 (Best Value Single) 10 Sylvania "engraved base" 1930's used/good (23ma) "Pin It")