First, the cable wire comes from a hub transmission system somewhere near your home. At source, the signal is passable, but by the time it runs through your community, splitting to each house, the signal has degraded. As the cable is RF (radio frequency) based, it has converted from an audio/video signal (at source) to RF and then needs to re-convert back into audio/video for your television. Along the way, anything broadcasting through the air has tried to get into the cable line and will appear as noise on your TV screen.

Satellite television can support over 250 channels of programming. All channels are digital quality and offer HD (high definition) television services that are compatible to your satellite TV service.
dish network vs direct tv