See also:

AM radio reception
AM signals, because of their low frequency, can bend around objects and skip along the ground. In addition, the signals can be bounced off the ionosphere and bent back to earth. Because of thes ...

Car phone and CB radio
When installing a car phone or a CB radio in your vehicle, be sure to observe the following cautions, otherwise the new equipment may adversely affect the electronic control modules and electr ...

Speedometer
Speedometer The speedometer indicates vehicle speed in miles per hour (MPH) or kilometers per hour (km/h). ...