(!!!) CX-301-A Cunningham NOS 1930 era (2.6ma Gm=800)

CX-301-A Cunningham NOS original box - missing end flap

2.6ma

Gm=800

Good Ma range 2-3ma

NOS Gm = 800+

(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