Twin Diode - Semiremote-Cutoff Pentode
The Telefunken EBF89 Vacuum tube is a miniature type used
as a combined detector and AGC-controlled IF amplifier. It
requires a miniature 9-contact socket.
Electrical Data:
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.3 A
Preferred Substitutes ......................... 6DC8
Substitutes ................................... 6AD8 6N8