(!!!!) (BEST PAIR) 01A Raytheon 4-Pillar box plate NOS 1930's (3.7ma and 3.7ma) 1% matched

1 matched pair) 01A Raytheon 4-Pillar box plate NOS 1930's 1 tube) 3.7ma Gm=800 1 tube) 3.7ma Gm=800   Vplate=135V Vgrid=-9V Ma NOS = 2.8-3ma Gm NOS = 800   (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