(!) 247=47 Tungsol Balloon used/good 1930's (23.2ma)
By Tube World
$ 29.99
247=47 Tungsol Balloon used/good 1930's in WB
23.2ma
Gm=2030
Vplate=250V
Vscreen=250V
Vgrid=-15V
NOS Iplate=27ma
NOS Gm=2350
See more: vacuum tube
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 247=47 Tungsol Balloon used/good 1930's (23.2ma) "Pin It")