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6SQ7GT National Union tests like new tilted glass 1940's (Gm=1200)

6SQ7GT National Union tests like new tilted glass 1940's (Gm=1200)

$ 4.79

6SQ7GT National Union tests like new tilted glass 1940's

1.2ma

Gm=1200 

 

Tested on Amplitrex

Vplate=250V

Vgrid=-2V

Good used Ma = .5-.8ma

Good used Gm = 800-900

Good NOS Gm = 1100

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