Quote:
Originally Posted by ADTech
Multi-path occurs when:
1. There is some signal that, besides taking a straight line of sight path to the receiving antenna, also reflects or diffracts off other objects before arriving at the antenna at a slight time delay relative to the original signal.
2. The LOS path is blocked (hill, tree, building, etc) and the only signals that arrive are some chaotic mess of signals that are some combination of reflected and diffracted copies of the original, perhaps with some remnant of the original signal at some level of attenuation.
It's generally up to the tuner to try to sort out the mess and reassemble something that decodes well enough to be usable without excessive errors. When the error correction circuits get overwhelmed, there will be a visible defect in the video or an audio defect ranging from a minor blip in either up to a pixelated mess to a complete loss of any audio or video, depending on the severity of the signal impairment.
Ken Nist, on his website at http://www.hdtvprimer.com/ANTENNAS/fixes.html and http://www.hdtvprimer.com/ANTENNAS/siting.html sums it pretty well. |
Thanks, that was helpful. I guess I'm going to try an HBU-22 unless anyone disagrees. I will remove the amplifier and try to return it, since I kept the packaging.
If that doesn't work, I guess it's back to spending $10 for basic cable channels. Better than the $100/mo I was paying before, I guess. That includes HBO though, so it's not a total waste.