Bill,

You're not the first person this has ever happened to. I have a friend who was performing with me during a New Year's Eve party a couple years ago using an accustic guitar fired through a high quality pickup. He decided to take a break while I continued performing with the keyboard. He placed his guitar on a guitar stand and within a few seconds the helicopter was landing. I quickly figgured out what was happening, turned down the guitar volume on the mixer and the helicopter was gone. The looping feedback was really wild. Later, after everyone had gone home, we fired up the system to see if it could be dulplicated. You could actually see the guitar strings vibrating if you looked at them from the right angle.

Cheers,

Gary

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Travlin' Easy