The Difference between Digital and Analog Cable TV Channels
When the first television broadcasts hit the airwaves in the 1920’s, television shows were transmitted using an analog signal. But in 1996, a new technology was invented that would change the way TV signals were transmitted through the air, with a digital signal. Today, the FCC requires all TVs to contain a digital tuner and for most TV stations to broadcast their channels in digital format. HDMI Encoder Modulator, 16in1 Digital Headend, HD RF Modulator at Soukacatv.com The big difference between Analog and Digital is how the signal is transmitted from the source to the TV in your home. Analog TV’s transmit audio and video signals over the airwaves in a manner similar to a radio signal. Each station has a single frequency over which to broadcast its analog television signal. You know these frequencies as channel numbers on your TV. Like radio signals, an analog TV signal can experience interference with their frequencies. This can cause static, snow, or ghosting on a channel. It can also cause fluctuations in color, brightness, and sound quality. And like a radio signals, analog transmission declines the further away you are from the source.