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(!!) (#2 71A Sylvania Pair) JAN-CHS-71A Sylvania NOS 1945 (26.0ma and 27.0ma) highest Ma

$ 109.99

1 pair) JAN-CHS-71A Sylvania NOS 1945 original boxes 1% matched

1 tube) 26ma Gm=1900

1 tube) 27ma Gm=2000

 

Matched on Amplitrex 

Vplate = 180V

Vgrid = -38V

Good Ma = 20ma

Good Gm = 1700

  

(71A=5V @ .25A Filament)


Typical Characteristics:

Vplate=135V, Vgrid=-27, Iplate=17.5ma, Rplate=1.82Kohms

Gm=1650, Mu=3, Rload=3Kohms, Pout=0.4watts

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