(!!) UX-201-A Radiotron Balloon used/good brass pins 1930”s (2.6ma and Gm=700)

1 tube) UX-201-A Radiotron Balloon used/good brass pins 1930”s

2.6ma

Gm=700

NOS Ma = 3ma

NOS Gm = 900

(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