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(READ REVIEW) 71A RCA branded Arcturus NOS 1940 era (22.6ma and 23.8ma) (same Gm)
(READ REVIEW) 71A RCA branded Arcturus NOS 1940 era (22.6ma and 23.8ma) (same Gm)
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1 pair) 71A RCA branded Arcturus engraved base NOS 1940 era
1 tube) 22.6ma Gm=1800
1 tube) 23.8ma Gm=1800
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
See more: vacuum tube
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