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(!) 31 Ken Rad NOS engraved base 1940 era (11ma) Image 1
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(!) 31 Ken Rad NOS engraved base 1940 era (11ma) Nav Image 1

(!) 31 Ken Rad NOS engraved base 1940 era (11ma)

$14.00 $16.99


Tags:

1940's 31 all Coronado Philco power tubes Sylvania triode zenith


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Power Tubes
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  • Description

31 Ken Rad NOS engraved base 1940 era

11ma

Gm=1000

 

Matched on Amplitrex

Vplate=180V

Vgrid=-30V

Good NOS Ma = 12.3ma

Good Gm = 1000

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