(!!!) (SINGLE) 6F8G National Union parallel dark gray plates 1950 era (11.2ma and 12.8ma)
$ 52.99
6F8G National Union parallel dark gray plates 1950 era
1 section) 11.2ma Gm=2600
1 section) 12.8ma Gm=2800
not a pair
Tested on Amplitrex
Vplate=250V
Vgrid=-8V
Good Iplate = 7-10
Good Ma = 2500-2800
NOTES:
6F8G = (2) 6J5G inside 1 bulb
1 section has top cap for grid
1 section has internal grid connection
GE, Sylvania and Raytheon have mirror image parallel black plates
RCA and Ken Rad have staggered black ribbed plates
See more: vacuum tube
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 (SINGLE) 6F8G National Union parallel dark gray plates 1950 era (11.2ma and 12.8ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_bc3f9647-de43-418b-b3a6-76a1c32735db.jpg?v=1727217623){kind=link}
 (SINGLE) 6F8G National Union parallel dark gray plates 1950 era (11.2ma and 12.8ma) "Pin It")