Annoying high pitch tone in headset.

[oldbirdman]

I have an annoying high pitched tone coming through my headset. What causes it ? How do I get rid of it ?

[DenverWinger]

I'm assuming hardwired headsets. Does the pitch vary with engine RPM? This would be alternator noise. Otherwise I don't know what it is.

Listen carefully-do you hear this same whine in your stereo speakers? On the bikes with a stereo there's supposed to be a capacitor connected to the main output lead of the alternator (a noise filter), it may have failed. Also check all the ground connections for the stereo.

If you are using a bluetooth transmitter and wireless headsets, and there is no whine in the stereo speakers you may have a ground-loop problem. Try connecting the bluetooth transmitter power leads directly to the power and ground leads for the stereo right at the stereo's connector. Or you can get a "Ground Loop Isolator" from your local car stereo dealer to insert into the audio connections of the bluetooth transmitter.

[gford]

Do you have your intercom turned up to high, if so, shut it off and see if the whine goes away.

[Solo So Long]

Do you have your intercom turned up to high, if so, shut it off and see if the whine goes away.

This also works for whines which are biological in origin.