Television plucks signals out of the air for broadcast. Cable companies receive the signal through large satellite dishes and send it to individual homes and TVs through a cable. Satellite companies install a dish on the home. But for many years before there was cable and satellite, homes used antennas to capture the signals. UHF and VHF are the two bands of signals used in over-the-air transmission. VHF stands for Very High Frequency, and transmits channels 2 through 13. UHF refers to Ultra High Frequency and covers channels 14 through 83. Cell phones, which use many of the same frequencies, received channels 70 through 83 in the 1980s. As of August 2010, UHF channels are 14 through 69. Tips Warnings Writer Bio
