Note: Please do not link down into my pages. I change this directory structure often and your links will not work correctly.
![]() |
EIA Base ...................................... F64
Heater Voltage ................................ 10 V
Heater Current ................................ 3.25 A
Pentode
Input ......................................... 13 pf
Output ........................................ 10 pf
Grid to Plate ................................. 0.12 pf
Pentode
Plate Voltage ................................. 1250 V
Grid No. 2 Voltage ............................ 300 V
Plate Dissipation ............................. 50 W
Grid No. 2 Dissipation ........................ 10 W
Class C Amplifier
Plate Voltage ................................. 1250 V
Grid No. 2 Voltage ............................ 300 V
Grid No. 1 Voltage ............................ -70 V
Grid No. 1 Current ............................ 7 mA
Plate Current ................................. 138 mA
Grid No. 2 Current ............................ 14 mA
Driving Power ................................. 1.0 W
Power Output (approx) ......................... 120 W
Class C Modulated Amplifier (Plate)
Plate Voltage ................................. 900 V
Grid No. 2 Voltage ............................ 300 V
Grid No. 1 Voltage ............................ -150 V
Grid No. 1 Current ............................ 6 mA
Plate Current ................................. 120 mA
Grid No. 2 Current ............................ 17.5 mA
Driving Power ................................. 1.4 W
Power Output (approx) ......................... 87 W
Class C Modulated Amplifier (Grid)
Plate Voltage ................................. 1250 V
Grid No. 2 Voltage ............................ 300 V
Grid No. 1 Voltage ............................ -30 V
Grid No. 1 Current ............................ 0.9 mA
Plate Current ................................. 60 mA
Grid No. 2 Current ............................ 2 mA
Driving Power ................................. 4.0 W
Power Output (approx) ......................... 25 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
Sun, 05 Feb 2023 20:51:45 -0700