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(!!) (Best Pair) 6F8G Raytheon black parallel ribbed plates NOS 1940's (8.8/7.8ma and 7.4/7.6ma) (same Gm)
(!!) (Best Pair) 6F8G Raytheon black parallel ribbed plates NOS 1940's (8.8/7.8ma and 7.4/7.6ma) (same Gm)
$ 119.99
1 pair) 6F8G Raytheon black parallel ribbed plates NOS 1940's
1 tube) 8.8/7.8ma Gm=2800/2700
1 tube) 7.4/7.6ma Gm=2700/2800
Good Ma range 7-9ma
Good Gm range 2400-2600
NOTES:
GE, Sylvania and Raytheon have mirror image parallel black plates
RCA and Ken Rad have staggered black ribbed plates
6F8G dual triode = (2) 6J5G's triodes in 1 tube
See more: vacuum tube
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 (Best Pair) 6F8G Raytheon black parallel ribbed plates NOS 1940's (8.8/7.8ma and 7.4/7.6ma) (same Gm)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/4_be740e0f-a350-4bbc-8828-bcaecb044d18.jpg?v=1779829220){kind=link}
 (Best Pair) 6F8G Raytheon black parallel ribbed plates NOS 1940's (8.8/7.8ma and 7.4/7.6ma) (same Gm) "Pin It")