(!!!) (PAIR) 6HF5 Sylvania NOS 1970's (83ma and 85ma)
$ 64.99
1 pair) 6HF5 Sylvania NOS 1970's
1 tube) 83ma Gm=8450
1 tube) 85ma Gm=8700
Tested on Amplitrex
Vplate=175V
Vscreen=125V
Vgrid=-25V
Good Ma range 90-125ma
Good Gm = 9,000 - 11,000
- Diathermy machine built by Mettler Electronics
See more: vacuum tube
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 (PAIR) 6HF5 Sylvania NOS 1970's (83ma and 85ma) "Pin It")