(!) (BEST SINGLE) 6HF5 Sylvania NOS 1970 era (117.5ma)

6HF5 Sylvania NOS 1970 era

117.5ma

Gm=9900

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