Remote-Cutoff Pentode
The 7A7 Vacuum tube is a glass lock-in type used as a RF
or IF amplifier in radio receivers. It requires a lock-in
8-contact socket.
Electrical Data
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.3 A
Preferred Substitutes ................. 7B7, 7L7.
Substitutes .................. 7AH7, 7G7, 7H7, 7T7.