UX-201-A Radiotron used/very good 1930's (2.5ma Gm=700)
By Tube World
$ 29.99
1 tube) UX-201-A Radiotron Balloon used/very good 1930's
2.5ma
Gm=700
Good Ma range 2-3ma
NOS Gm = 800
(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
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