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The muting feature is a leaf switch on the back of the channel motor. When the motor is activated, the motor shaft goes into the gear box and the switch closes, when the motor stops, the spring loaded shaft pops back out and opens the switch. The automatic fine tuning was what everyone else called pre-set fine tuning. Each channel tuned individually, adjusting any one channel didn't affect the others.
Last edited by damen; 01-05-2024 at 08:18 PM.
Reason: fine tuning
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