(!) (#1C 12BY7 Sylvania Pair) JHS-12BY7 Sylvania NOS 1966 (30ma and 34.5ma)
$ 25.99
1 pair) 12BY7 Sylvania NOS 1966
1 tube) 30ma Gm=13,000
1 tube) 34.5ma Gm=13,700
Tested on Amplitrex AT1000
Vplate=250V
Vscreen=180V
Iplate Ma (good) = 22-30ma
Gm = 11,000-13,000
Heathkit DX-35 1950's
Kenwood TS-830S Transceiver
Kenwood 520
Kenwood TS-20
Yaesu FT-101 Transceiver
- 12BV7 is a close substitute
See more: vacuum tube
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 (#1C 12BY7 Sylvania Pair) JHS-12BY7 Sylvania NOS 1966 (30ma and 34.5ma) "Pin It")