Cathode (connected internally

to mid-point of heater)            

oxide coated

Heater voltage                   

 6.3+ -5% V

Heater current                          

22 A

Tube heating time (minimum)          

 5.0 min

Inter-electrode capacitances (approximate):

anode to grid 2 (grid 1 and cathode

not connected)       

 13 pF

anode to grid 1

(grid 2 and cathode

not connected)

  7.5 pF

anode to cathode

(grid 1 and

grid 2 not connected)

 26 pF