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6F8G RCA gray ribbed staggered plates NOS no printing 1950's (7ma/8ma)

6F8G RCA gray ribbed staggered plates NOS no printing 1950's (7ma/8ma)

$ 39.99

6F8G RCA gray ribbed staggered plates NOS no printing 1950's in white box

 

7ma Gm=2500

8ma Gm=2600

 

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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