(!!) UY-227 RCA Radiotron Balloon used/good 1930 era (3.5ma)
$ 14.99
UY-227 RCA Radiotron Balloon used/good 1930 era
3.5ma
Gm=700
Tested on Amplitrex
Vplate=250V
Vgriod=-21V
NOS Ma = 4.6-5ma
NOS Gm=900
See more: vacuum tube
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 UY-227 RCA Radiotron Balloon used/good 1930 era (3.5ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/products/1_30f16fda-6654-466f-b529-2c7b3b84bb3f.jpg?v=1585858561){kind=link}
 UY-227 RCA Radiotron Balloon used/good 1930 era (3.5ma) "Pin It")