Description
(!!!) 201A Silvertone Balloon NOS 1930 era (1.8ma and Gm=500)
201A Silvertone Balloon NOS 1930 era
1.8ma
Gm=500
Good used Ma = 2.0-2.5ma
Good used Gm = 700
(Filament=5V @ 250ma, Vplate max=135V)
– Crosley C5 1926
Class A Amplifier:
—————–
Plate Voltage = 90
VGrid No. 1 Voltage -4.5V
Amplification Factor (mu) = 8
Plate Resistance (approx) 11Kohms
Transconductance = 725mhos
Plate Current = 2.5 mA