6HF5 Sylvania NOS 1970 era some small mica flakes inside tube (96ma)
By Tube World
$ 34.99
6HF5 Sylvania NOS 1970 era - some mica flakes at bottom of tube - faded printing
96ma
Gm=9300
NOT A PAIR
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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