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6HF5 Sylvania NOS 1970 era (93ma)

6HF5 Sylvania NOS 1970 era (93ma)

$ 29.99

1 tube) 6HF5 Sylvania NOS 1970 era

93ma

Gm=9500

 

 

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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