(!!!!) (Single) 10 Sylvania "engraved base" 1930's NOS (29ma)
$124.99
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10 Sylvania "engraved base" 1930's NOS 29ma Gm=2000 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)
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