(!) 247=47 RCA Balloon used/60-65% 1930's (20ma)
By Tube World
$ 19.99
247=47 RCA Balloon used/60-65% 1930's in WB
20ma
Gm=1530
Vplate=250V
Vscreen=250V
Vgrid=-15V
NOS Iplate=27ma
NOS Gm=2350
See more: vacuum tube
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 247=47 RCA Balloon used/60-65% 1930's (20ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_29f9f4aa-493d-4611-bbe6-3282372a3fe8.jpg?v=1692682976){kind=link}
 247=47 RCA Balloon used/60-65% 1930's (20ma) "Pin It")