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10 Sylvania NOS ceramic base 1940's (26ma)

10 Sylvania NOS ceramic base 1940's (26ma)

$ 99.99

1 tube) 10 Sylvania NOS ceramic base 1940's

26ma

Gm=1800

 

Vplate=300V, Vgrid=-15V

Good Ma range=20-30ma

Good Gm range 1800-2000

 

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 different Mu factors and plate resistance)

 

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