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(!) UX-112A Radiotron Balloon engraved base used/tests like new 1930 era (8.3ma) (Gm like new)
(!) UX-112A Radiotron Balloon engraved base used/tests like new 1930 era (8.3ma) (Gm like new)
$ 49.99
UX-112A Radiotron Balloon engraved base used/tests like new 1930 era in white box
8.3ma
Gm=1700 (like new)
Vplate = 180V
Vgrid = -13.5V
Good used Ma = 5.5 - 7ma
Good used Gm = 1400-1600
stamped circular plate structure similar to RCA / Cunningham UX-112A and CX-112A
- RCA Radiola 16 from 1928
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