(!!) (Best Single) UY-227 RCA Radiotron Balloon tests like new 1930 era (10.2ma)
$ 39.99
UY-227 RCA Radiotron Balloon tests like new and like new condition 1930 era, fine mesh-plate in WB
10.2ma
Gm=900
Tested on Amplitrex
Vplate=250V
Vgriod=-21V
NOS Ma = 4.6-5ma
NOS Gm=900
See more: vacuum tube
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