(!!!) 201A Silvertone Balloon NOS 1930 era (1.8ma and Gm=500)
By Tube World
$ 19.99
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:
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Plate Voltage = 90
VGrid No. 1 Voltage -4.5V
Amplification Factor (mu) = 8
Plate Resistance (approx) 11Kohms
Transconductance = 725mhos
Plate Current = 2.5 mA
See more: vacuum tube
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 201A Silvertone Balloon NOS 1930 era (1.8ma and Gm=500) "Pin It")