Electron-Ray Tube
The 6AL7GT Vacuum tube is a glass octal type used for use
as a tuning indicator in AM-FM receivers. It requires an
octal socket. Cathode resistor 3.3K. Grid voltage 0.Pin
6 controls top left quarter of display, pin 4 controls
top right of display, pin 5 controls bottom half of
display when tube is mounted in horizontally with a
plane passing through pins 4 and 8 vertical and with
pin 4 on top.
Electrical Data:
Heater Voltage ............................... 6.3 V
Heater Current .............................. 0.15 A
Maximum Heater-Cathode Voltage ................ 90 V