(!) UX-199 RCA Radiotron NOS original box 1920's (2.3ma)
By Tube World
$ 59.99
UX-199 RCA Radiotron NOS original box 1920's
2.3ma
Gm=300
(UV-99 and UX-99 have a 3.3V @ .063ma Filament, UV base has smaller size pins)
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