Quote:
Originally Posted by Tower Guy
Have you considered interference/overload, perhaps from an FM station, that varies depending on your antenna aiming?
Your preamp has significant gain and has no filtering nor preselection. I like the Winegard AP-8700 better. It's really two amplifiers in one package, one for VHF and one for UHF. Each preamp has a filter to minimize overload from out of band signals.
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Yeah, I've considered that and a million other possibilies, The FM trap changes nothing, I've dropped the gain on the amp down to 10 db, I just lost the signal completely doing that, the thing that bugs me is the SS changes in the rain, I would think I'd loose signal strength, not gain it in another direction in a rain storm.
The only thing that might be causing this is a very, VERY large oak tree in my direct path at 204° about 75 feet away from the antennas, this tree not causing any problems winter OR summer on all the rest of the channels, but may be a giant reflector on RF 18 when it gets wet...that would be the only possible cause I can fathom. Beyond that tree, there is no large structures or mountains in the way to the transmitters, the path goes over the Hudson Valley, it's all down hill from me. And I'm very likely aiming under the lower branches anyway with the top antenna only 15 feet up, it's a big tree, so I don't know.....
What do you think T.G.?
For those that want to take a direct look, here's lat/long:
lat 43.325412
lon -73.570225