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(!!) (Good Value Pair 1930's) 45=245 Philco and Silvertone by Sylvania engraved base 1930's used/like new (30ma and 32ma) (same Gm)
(!!) (Good Value Pair 1930's) 45=245 Philco and Silvertone by Sylvania engraved base 1930's used/like new (30ma and 32ma) (same Gm)
$ 179.99
1 pair) 45=245 Philco and Silvertone by Sylvania engraved base 1930's used/test like new - different shape top mica - see photo
1 tube) 30ma Gm=2000 Philco
1 tube) 32ma Gm=2000 Silvertone (245) slightly taller bottle
AMPLITREX TEST DATA:
Vplate=275V
Vgrid=-54.8V
Good Ma range 25-35ma
Good Gm = 2000
recommended for:
Tektron
Deja Vu
Victor RE-36 1929
DIY
See more: vacuum tube
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 (Good Value Pair 1930's) 45=245 Philco and Silvertone by Sylvania engraved base 1930's used/like new (30ma and 32ma) (same Gm) "Pin It")