What is the difference between a digital signal and an analog signal?
A. The scientific answer is very complex. However, the practical answer is fairly simple. Analog signals are traditional TV channels. Each channel is a Radio Frequency (RF) signal. This is an electrical signal. Therefore, it is subject to electrical and atmospheric interference like lightning, CB radios, pagers, etc. That’s what causes little lines and sparkles on some channels. Digital signals are made of the same 1’s and 0’s of computer language. They do not suffer from the same type of interference. Therefore, the picture and sound quality are very high. In addition, digital signals can be compressed. This means more channels. Clear Picture’s digital service offers 42 premium movie channels, over 40 Pay-Per-View movies channels, over 40 channels of professional and college sports, 40 CD-quality music formats and 30 channels from familiar program suppliers.
