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(!!) 71A RCA/Cunningham NOS 1940 era (20ma)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 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
(!!) 71A RCA/Cunningham NOS 1940 era (20ma)
Item no
:
55752926261
US$ 49.99
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