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I can watch it about 20 minutes and then I will lose signal for about 5 minutes then it comes back.
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OTA signals constantly vary in strength, especially 2Edge signals. Does your TV have a signal strength indicator?
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I rotate antenna in small increments but don't make a difference.
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Sometimes the aim for the best signal strength is not the same azimuth for best signal quality. I first learned about that when using an Apex DT502 converter box, which has dual signal bars, one for signal strength and one for signal quality (the inverse of errors). I first aimed my antenna for max signal strength, and then rotated the antenna slightly to the right. The signal strength went down slightly, but the signal quality went way up.
Signal strength is certainly important, but signal quality as defined by SNR (Signal to Noise Ratio) and uncorrected errors is equally, if not more so, important. My Sony KDL22L5000 has a Diagnostics Screen that shows relative signal strength, SNR, and uncorrected errors.
bad signal with picture freeze, SNR below 15 dB, and many errors:
good signal:
FM filters to try:
http://www.mcmelectronics.com/produc...-FM-88-/33-341
https://www.antennasdirect.com/store...on_filter.html
http://comingsoon.radioshack.com/rad...l#.VaFk5DjbJLM very slow link