Medium-Mu Triode - Sharp-Cutoff Pentode
The 9A8 / 8A8 / PCF80 Vacuum Tube is a miniature type
used as combined oscillator and mixer tubes in vhf tv
receivers. It requires miniature 9-contact socket
Electrical Data:
Heater Voltage ................................ 9 V
Heater Current .............................. 0.3 A
Preferred Substitutes ................... 8A8 PCF80
Substitutes .............................. 9EA8 9U8