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56 National Union engraved base used/tests like new 1930's (6.0ma)

56 National Union engraved base used/tests like new 1930's (6.0ma)

$ 13.99

56 National Union engraved base used/tests like new 1930's

6.0ma

Gm=1500

 

 

Tested on Amplitrex:

Vplate=250V

Vgrid=-13.5V

Iplate good range = 4.5-5.5ma

Good used Gm=1200-1300

(Vfilament = 2.5 volts)
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