Pentode
Made in Germany.
The German Telefunken EF85 Vacuum tube is a miniature glass type used in Radios, Televisions
and Phonographs ( Record Players ).
It is used for RF/IF-Stage Controlling (mu). This tube requires a 9 pin socket.
Electrical Data:
Heater Voltage ..................... 6.3 V
Heater Current ..................... 0.3
Preferred Substitutes ........ 6BX6, 6BY7, 6F19, 6F26, W719
Substitutes ........................ 6EC7