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Heater-cathode type used as af power amplifier and modulator and as rf power amplifier and oscillator. Requires octal socket and may be operated in any position.
EIA Base ...................................... 8BY
Heater Voltage ................................ 6.3/12.6 V
Heater Current ................................ 1.6/0.8 A
Each Pentode
Input ......................................... 13.3 pf
Output ........................................ 8.5 pf
Grid to Plate ................................. 0.2 pf
Each Pentode
Plate Voltage ................................. 500 V
Grid No. 2 Voltage ............................ 200 V
Plate Dissipation ............................. 25 W
Grid No. 2 Dissipation ........................ 4 W
Class C Oscillator/Amplifier
Plate Voltage ................................. 500 V
Grid No. 2 Voltage ............................ 200 V
Grid No. 1 Voltage ............................ -45 V
Grid No. 1 Current ............................ 2.5 mA
Plate Current ................................. 150 mA
Grid No. 2 Current ............................ 17 mA
Driving Power ................................. 0.13 W
Power Output (approx) ......................... 56 W
Class C Modulated Amplifier (Plate)
Plate Voltage ................................. 400 V
Grid No. 2 Voltage ............................ 175 V
Grid No. 1 Voltage ............................ -45 V
Grid No. 1 Current ............................ 3 mA
Plate Current ................................. 150 mA
Grid No. 2 Current ............................ 15 mA
Driving Power ................................. 0.16 W
Power Output (approx) ......................... 45 W
Push Pull Class AB2 Amplifier
Plate Voltage ................................. 500 V
Grid No. 2 Voltage ............................ 125 V
Grid No. 1 Voltage ............................ -15 V
Peak Grid No. 1 Voltage........................ 32 V
Plate Current (Zero Signal) ................... 22 mA
Plate Current (Maximum Signal) ................ 150 mA
Driving Power ................................. 0.36 W
Load Resistance ............................... 8K Ω
Power Output (approx) ......................... 54 W
If you are uncertain about the EIA designator for a particular tube please use the "Index" button to list all the tubes in the database. You can click on the designator for the closest tube.
(c) 1994-2021 by William A. Beech, NJ7P
Mon, 06 Feb 2023 19:36:17 -0700