Dear William: The loop antennas I described are not grounded, although I do have a ground wire that connects to my amateur rig. Some antennas are grounded at a point, either at the receiver end or some are grounded through a resister at the opposite end of the antenna. I had a ham friend who grounded his system to a well casing, thinking that was a great ground. It apparently was just that, and the next time an electrical storm came his way, the lightening scored a direct hit on his ham station. Grounding or not to ground will also create a good debate among experienced radio enthusiasts.
Yours Truly, Clifford Wilson [Non-text portions of this message have been removed]