I was just reminded that placing a battery on concrete will drain it, so there must be conduction somewhere. Its amazing what one can learn from this forum. Concrete was way down my list of things to look up. As long as we have wandered down an unusual path I have one other question that came up. Does anybody know why the FCC - not the FAA has regulations against using a cell phone in a private airplane. It is a little more obvious for a commercial airplane that use the fuselage as a return path from various equipment bays but private plans aren't wire that way - I don't think. There was a comment made that it interferes with the Cell system in some manner, any clues? Thanks Gary
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