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328A Western Electric small punch plate used/good 1953 (4.6ma)

328A Western Electric small punch plate used/good 1953 (4.6ma)

$ 149.99

328A Western Electric small punch plate used/good 1953 - strong Gm

4.6ma

Gm=1700

 

 

Tested on Amplitrex

Vplate=250V

Vscreen=135V

Vgrid=-3V

Good Ma = 5.3-5.8ma

Good Gm = 1700-1800

See more: vacuum tube
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