High-Mu Triode - Sharp-Cutoff Pentode
The 31LR8 Vacuum tube is a novar type used in combined
vertical-deflection oscillators and amplifiers in B&W TV
receivers. It requires a novar 9-contact socket.
Electrical Data:
Heater Voltage ................................ 31.5 V
Heater Current ................................ 0.3 A
Substitutes ........................... 6KY8