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(!!!) (#1 262A Western Electric) 262A Western Electric mesh-plate engraved base ST-shape glass tests like new around 1940 (3.5ma) (High Ma and Gm)

$ 498.88

1 tube only) 262A Western Electric mesh-plate engraved base ST-shape glass tests like new around 1940 in white box - large getter, very good overall condition

NOT A PAIR

3.5ma

Gm=1000

 

TEST SETTINGS AS PER DATA SHEET: 

Vplate = 135V

Vgrid = -4.5V

Good NOS Ma range = 2.5-3.0ma (NOS = 2.8ma)

Good NOS Gm range = 900-1000 (NOS = 980)

Mu = 15.1

 

 

top cap = grid connection

 

 

 

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