Dave,
I would believe you are experiencing ground loop problems rather than
feedback - yes, groundloops can introduce feedback of a type, but here in
ham corcles we usually relate feedback to the RF type. Check by operating
into a dummy load - if it persists, it is ground loop problems and not RF
I have a Heil Clearspeech speaker and it specifically recommends a
separate power supply for the speaker, do not run off the same supply as
the rig.
I didn't see the reason for that, so I hooked the speaker up to the same
supply I used for the K2. It sounded pretty good a low volume, but when
I
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