Double Triode
The 12SX7GT is an Octal tube used in the Radio Compass, model R-101 / ARN-6, AN/ARN-6 and R-101AA receivers.
The 12SX7GT Vacuum tube is used in other Radio Receivers as well.
Electrical Data:
Heater Voltage ................................ 12.6 V
Heater Current ................................ 0.15 A
Preferred Substitutes ......................... 12SN7