How is a Television Signal Transmitted & Received?
Over-the-Air (Antenna) Local television stations broadcast digital programming through over-the-air digital radio signals. The signals are beamed from one of the station’s transmitter towers and received by your digital antenna. The antenna relays the signal for decoding along coaxial cable to the either your digital TV (DTV) receiver box, or directly to your TV–if your TV has an internal DTV converter. Satellite Satellite TV broadcasters beam programming down from satellites orbiting the earth at an elevation of about 22,300 miles. These geostationary satellites orbit the earth around 0 degrees latitude, making their orbits appear stationary from earth and also making it possible for satellite dishes to lock onto a satellite. The satellite is adjusted and locked on to the satellite to receive the it’s C, Ku, and Ka radio bands–which are later converted into audio and video by your receiver inside. Cable Broadcasters around the country upload their programming to satellites orbiting
