Sharp-Cutoff Pentode
The 7G7 Vacuum tube is a glass lock-in type used in video
amplifiers of TV receivers and in other applications
requiring high transconductance. It requires a lock-in
socket.
Electrical Data
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.45 A
Preferred Substitutes
......................... 1232, 7AG7
Substitutes
........................... 7AH7 7H7 7L7