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(!!!) 211D=VT-4-B Western Electric nickel base tests strong mid-1920's - reboxed (108ma)

$ 1,099.99

1 tube) 211D=VT-4-B Western Electric nickel base tests strong mid-1920's - reboxed

108ma

Gm=4800

1 TUBE ONLY - NOT A PAIR

 

Tested on Amplitrex 

Vplate=500VDC

Vgrid=-1VDC

Good Ma range = 100 - 120ma

Good Gm range = 3600 - 4000


 

Recommended for

SET amps under 1000Vplate

 

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