Variable-Mu Pentode
The 6K7 Vacuum tube is a metal type used in RF and IF
stages of radio receivers, particularly in those
employing AVC. They require an octal socket and may be
mounted in any position. They are similar to type 78.
Electrical Data:
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.3 A
Maximum Heater-Cathode Voltage ................. 90 V
Preferred Substitutes ................. 6S7
Substitutes ....................... 6J7 6U7