42 | Troubleshooting |
Poor reception
Most types of television interference can be corrected by adjusting the height and position of the VHF/UHF antenna. Outdoor antennas are recommended for best results, if you are not using a cable or satellite service. The most common types of television interference are shown here. If one of these symptoms appear when the TV is connected to a Cable TV system, the disturbance may be caused by the local cable company broadcast.
Ignition - caused by interference from automobile ignitions, neon lights, electric drills, and other appliances.
Ghosts - caused by the television signal following two paths, such as when the signal is reflected from tall buildings, hills, or other objects.
Snow - caused by the television being located in a fringe area where the signal is weak.
Radio frequency interference - caused by the presence of unshielded sources of radio signals.