"You should establish a GROUND BUSS! No, it is not made by GM, grin! It is a
metal bar or plate you can drill and tap or put screws, nuts, and lock
washers into! Then run INDIVIDUAL, yes, individual wires from equipment to
the ground buss. Run old coax braid or a large SINGLE wire, to the outside
ground rod field. This stops what is called GROUND LOOPS.
Unfortunately, that will not eliminate ground loops if the power source
to which all the equipment is plugged into is not also grounded by a
separate wire to that ground rod and to nothing else. This is called a
technical ground. Otherwise, you will have a difference in potential
between the house electrical ground and the ground rod for the
equipment, i.e. ground loop.
A really easy way to check for ground loops is to bring up any
digi-modes program and inspect the waterfall. If you see lines at
approximately 60Hz intervals or multiples thereof then you have ground
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