AVS Forum Special Member
Join Date: Nov 2001
Location: College Park, MD
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I used the TVfool interactive map and see that I am missing that building cleanly, so the problem must be the vegetation. I'll take comprehensive signal readings now and compare them to the next few months as the leaves fall and the sap thins out, but the prospects for reliable reception from that direction seems bleak. I might raise the antenna height by ten feet, but I live in a nanny-town and I'll probably get a "Courtesy Notice" door hanger forewarning me of an imminent $100 fine when I do. They fine us for not having lids on the trashcans here.
A few miles from here, I once had to fight with the reflections off Byrd Stadium when I was servicing the master antenna for a 400 site campground. Of course, in those days, with analog signals, you could see the ghost image so you could observe continuous improvements when migrating the antenna in any direction. At that site, I got my best reception by moving the antenna to a nearby location on the property that was lower and didn't have line of sight, but had a less severe multipath bounce off the stadium.
There was a trick we could use to locate the object we were getting a signal reflection off. The horizontal measure of the ghost displacement was proportionate to the extra distance that the ghost signal traveled, and I used to have a chart that said, for each standard picture tube size, how many feet of extra signal path each inch of screen displacement indicated. Armed with that information, it was easy to generate an elipse and then intersect that with the second azimuth on which the antenna could be peaked. At the time I was remedying that campground's problem, I couldn't actually see Byrd Stadium because of the foliage and didn't know the school campus well enough to even think of it, but the secondary signal path line and the ellipse intersected right on it.