Electron-ray Tube
Teslavac Eye Tubes ~ Test Bright!
The Teslavac EM-84 / 6FG6 Vacuum tube is used as a Signal
strength indicator tube.
These tubes were re-boxed from a Bulk Pack.
Electrical Data:
Heater Voltage ................................ 6.3 V
Heater Current ............................... 0.27 A
Preferred Substitutes ................ 6E3P, 6FG6
Substitutes .......................... 6HU6