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(!) (#1 50 ST-16) 50 Sylvania branded Zenith ST-16 shape NOS original box 1940's (63ma) (strong Ma and Gm)

(!) (#1 50 ST-16) 50 Sylvania branded Zenith ST-16 shape NOS original box 1940's (63ma) (strong Ma and Gm)

$ 158.88

1 tube) 50 Sylvania branded Zenith ST-16 shape NOS original box 1940's

- copper grid posts

63ma

Gm=2500

 

Tested on Amplitrex

Vplate=440V

Vgrid=-66V

Good NOS Ma = 50-55ma

Good NOS Gm = 2000-2100

  

 

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See more: vacuum tube
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