Triode - Heptode
The Valvo ECH81 vacuum tube is a miniature type used as a
combined oscillator and mixer in AM/FM and TV receivers.
It requires a miniature 9-contact socket.
Electrical Data:
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.3 A
Maximum Heater-Cathode Voltage
Heater Positive with Respect to Cathode:
DC Component .............................. 100 V
Heater Negative with Respect to Cathode:
DC Component .............................. 100 V
Substitutes ..........................6AJ8