(!!) 71A RCA/Cunningham NOS 1940 era (20ma)
$ 49.99
71A RCA NOS 1940 era
20ma
Gm=1700
Tested 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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 71A RCA/Cunningham NOS 1940 era (20ma) "Pin It")