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CX-371A Cunningham Balloon used/good 1930's (18ma)

CX-371A Cunningham Balloon used/good 1930's (18ma)

$ 49.99

CX-371A Cunningham Balloon used/good 1930's

18ma

Gm=1800

 

Tested on Amplitrex

Vplate=180V

Vgrid=-38V

Good Ma = 20ma

Good Gm = 1600-1700

See more: vacuum tube
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