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How does cable length affect signal quality?
One of the problems with video or audio signals, is they degrade over long distances. Digital signals are especially affected by long cables.

With an analog signal, the image will develope visual "noise" or "snow" as the signal begins to drop off. Colors will begin to bleed into each other or start to fade.

A digital signal will start to drop out until it fails to appear at all.

One way to increase the distance a signal can travel is with the use of repeaters or amplifiers. These can extend the distance that the signal can be transmitted.

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