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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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