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8417 Sylvania used/good 1960's (79ma)

8417 Sylvania used/good 1960's (79ma)

$ 64.99

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1 tube) 8417 Sylvania used/good 1960's

Ma plate=79

Ma screen=3.9ma

Gm=17,100

 

Tested on Amplitrex:

Vplate=300V

Vscreen=300V

Vgrid=-12V

Good used Ma range 70-85ma

Good Gm = 17-20,000

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