UX-171A RCA Radiotron Balloon used/good 1930's (18ma)
$ 44.99
UX-171A RCA Radiotron Balloon used/good 1930's
18ma
Gm=1600
Tested on Amplitrex
Vplate=180V
Vgrid=-38V
Good Ma = 20ma
Good Gm = 1600-1700
See more: vacuum tube
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