Remote-Cutoff Pentode
The 12SK7GT Vacuum Tube is used as an RF or
IF amplifier in radio receivers.
It features single-ended construction and interlead
shields. Because of the remote-cutoff characteristic,
this type is able to handle large signal voltages
without crossmodulation or modulation-distortion and are
often used in receivers with AVC. They require an octal
socket and may be mounted in any position.
The 12SK7GT is a glass tube equipped with a small octal base and metal base shell ring. It is
interchangeable with its metal equivalent type 12SK7 and under normal operating conditions will
require no additional shielding other than that afforded by the tube design itself.
Electrical Data:
Heater Voltage ................................ 12.6 V
Heater Current ................................ 0.15 A
Maximum Heater-Cathode Voltage:
Heater Positive with Respect to Cathode
DC Component .................... 90 V
Heater Negative with Respect to Cathode
DC Component .................... 90 V
Prefered Substitutes ................... 12SK7
Substitutes ................... 12SJ7, 12SJ7GT