(!!!!) (Good Value Pair) CX-301-A Cunningham used/good 1930 era (2.0ma and 2.0ma)
$59.99
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1 pair) CX-301-A Cunningham used/good 1930 era in white boxes 1 tube) 2.0ma Gm=600 1 tube) 2.0ma Gm=550 Good mA range 2-3ma NOS Gm = 700-800 Good used Gm= 500-700 (Filament=5V @ 250ma, Vplate max=135V) - Crosley C5 1926 Class A Amplifier:-----------------Plate Voltage = 90 VGrid No. 1 Voltage -4.5VAmplification Factor (mu) = 8Plate Resistance (approx) 11KohmsTransconductance = 725mhosPlate Current = 2.5 mA
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