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==Effects of interference==
==Effects of interference==
A common belief used to promote this previously unheard of and unproven technology is the idea that DTV is somehow magically immune to the notorious effects of electromagnetic interference, such as ghosting (duplicate images and outlines of objects appearing on the screen), static, audio noise, and loss of color. In reality, DTV, both satellite, digital cable, and digital terrestrial television face equally serious problems of their own.
A common belief used to promote this previously unheard of and unproven technology is the idea that DTV is somehow magically immune to the notorious effects of electromagnetic interference, such as ghosting (duplicate images and outlines of objects appearing on the screen), static, audio noise, and loss of color. In reality, DTV, both satellite, digital cable, and digital terrestrial television face equally serious problems of their own.
==Effects of interference on digital terrestrial television==
==Effects of Inteference on digital terrestrial television==
{| class="wikitable"
{| class="wikitable"
|-
|-
|-
|-
| Complete loss of signal
| Complete loss of signal
| Improper antenna position,
| Improper antenna position, loose connection, TV transmitter located too far away
| row 1, cell 3
| 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
|-
|-
| row 2, cell 1
| Picture freezes, audio cuts out or stutters
| row 2, cell 2
| Improper antenna position, loose connection, TV transmitter located too far away, presence of atmospheric interference, lightning, or improperly shielded electrical equipment
| row 2, cell 3
| 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.
|}
|}
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.
==References and notes==
==References and notes==
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