1Pc EM84 / 6FG6 TELEFUNKEN tubes tuning indicator MAGIC EYE

TUBE TYPE: EM84 = 6FG6 = EM85E
With a 250V supply and 470k ohm load, requires typically 0 to -22V grid voltage for full range of indication from 0 to 21mm bar length.
It has a variable gain characteristic which improves the sensitivity to weak signals.Original vintage Germany Telefunken tubes.
Made in West Germany in the 1950s/60s. All with <>-mark on bottom. Old stock. Tested with EXCELLENT results – VERY GOOD brightness.
Quantity of Tubes: 1 Pc
Actual Brand: TELEFUNKEN