99=X-99 RCA Radiotron NOS 1930's in sealed box (2.2ma)
$ 49.99
99=X-99 RCA Radiotron NOS 1930's in sealed box
Vplate=90V
Vgrid=-4.5V
Iplate = 2.2ma
Gm=400
(UV-99 and UX-99 have a 3.3V @ .063ma Filament, UX base has smaller size pins)
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