(!!!) X99=UX-99 Continental Chicago by RCA NOS 1920”s (2.5ma)

X99=UX-99 Continental Chicago by RCA NOS 1920”s

2.5ma

Gm=350

Vplate=90V

Vgrid=-4.5V

(UV-99 and UX-99 have a 3.3V @ .063ma Filament, UX base has larger size pins)