See also:

Benefits of digital broadcasting
Better sound (FM sounds near CD quality and AM as analogue FM). Some FM frequencies offer a greater number of listening choices through “multicasting” (consisting of a frequency's main cha ...

What is an Onboard Diagnostic System (OBD II)?
OBD II is part of your vehicle's computerized engine management system. It stores diagnostic information about your vehicle's emission controls. It can light the Check Engine light (MIL) if it ...

Listening to satellite radio
The Sirius satellite system consists of a number of high elevation satellites in geosynchronous orbit. NOTE • The digital signals from the Sirius satellites are line-of-sight, which means that p ...