Howdy,

Has anyone experienced a squealing plantronics headset mic? Ours was
replaced by the company and started squealing again. It is hooked into
a Becker 4201 which was tweaked by the factory as a troubleshooting
measure. It seems like the mic is being affected by the antenna RF. If
I hold it below the cockpit outside, it improves. Used to work just
fine. Don't know what happened. Any ideas?

BTW, the side tone is turned off.

Tim