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800=VT-64 RCA DeForest black plate engraved base used 1930's (38ma, Gm=1750) (tested on Amplitrex)

$ 99.99

1 tube) 800=VT-64 RCA Deforest 1940's charcoal black plate - rectangle flat-foil getter, good getter, in white box

38ma

Gm=1750

 

Good used Ma range 40-45ma

Good Gm = 2000-2100

Vplate=500V

Vgrid=-1V

 

 

General Information

Vfil=7.5V @ 3.25A, 35 watts, Vplate max=1250VDC, Mu=15

Introduced in 1933

transmitting triode

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