UX-199=199 RCA Radiotron NOS 1930 era (1.7ma) Cheap
Original price was: $39.99.$23.99Current price is: $23.99.
UX-226 RCA Radiotron balloon used/good 1920's (3.7ma Gm=900) Cheap
Original price was: $17.99.$14.39Current price is: $14.39.
Original price was: $29.99.$23.99Current price is: $23.99.
UX-201-A Radiotron used/very good 1930’s (2.5ma Gm=700)
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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