6JS6B GE branded Zenith NOS (93ma)

1 tube) 6JS6B GE branded Zenith NOS 1960”s in 6JS6C box (93ma Gm=9,300)

Tested on Amplitrex AT1000

Vplate=175V

Vscreen=125V

Vgrid=-25V

GOOD Ma range 75-110ma

GOOD Gm range 9,000 – 12,000