Wierd, I thought I sent this message already.. Anyway.
I've been offered a site, but I would have to mount the antennas on the side of the water tower, not the top. That means within probably 3-6 feet of the side of the big metal can. I have docs from my antenna mfgr for pattern when I adjust the loop-mast spacing, but I need something that will show me what happens with distance between the mast and the water tower. I need this for VHF and UHF. Any pointers?