Changes

| Re position antenna, shift to different directions, use on screen signal meter, often located on TV menu or set top box, use better quality antenna, determine the location of power transformers, overhead lines, or electrical panels, avoid those locations.

| Re position antenna, shift to different directions, use on screen signal meter, often located on TV menu or set top box, use better quality antenna, determine the location of power transformers, overhead lines, or electrical panels, avoid those locations.

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In addition, being below average terrain, underground, or on the opposite side of a large bank of mountains and/or hills, such as areas west of [[Los Angeles]] have been known to prevent the reliable reception of over the air DTV entirely without a more substantial and costly rooftop tower antenna setup. In lower signal strength areas, indoor antennas don't as often provide satisfactory results (more than three or so channels). Analog signals fade and degrade much more gradually than DTV. With DTV, you either get perfect reception, acceptably good reception, or none at all.

In addition, being below average terrain, underground, or on the opposite side of a large bank of mountains and/or hills, such as areas east of [[Los Angeles]] have been known to prevent the reliable reception of over the air DTV entirely without a more substantial and costly rooftop tower antenna setup. In lower signal strength areas, indoor antennas don't as often provide satisfactory results (more than three or so channels). Analog signals fade and degrade much more gradually than DTV. With DTV, you either get perfect reception, acceptably good reception, or none at all.

==References and notes==

==References and notes==

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