2000 Saab 9-3 Owner's Manual - Page 107

Saab 9-3 Audio System 107 IB977 IB978 Multipath interference When the radio waves from an FM transmitter collide with a large building, for example, they will be reflected so that they reach the car antenna slightly later than the direct waves. This is referred to as multipath distortion. The effect is liable to be blamed upon malfunctions in the radio. Shadow effect Because FM radio waves travel in straight lines from the transmitter, a shadow effect can occur when tall buildings or hills obstruct the interference path from the transmitter to the car. Sources of FM interference Interference to FM reception can be caused by the electrical systems in other vehicles, particularly if the signal from the transmitter is weak. To maintain good radio reception do not tint the rear windshield, particularly with film containing small metal flakes. Antenna The antenna of the Audio System is motorized. Saab 9-3 Viggen Coupé and 5-door: The antenna is located on the roof. NOTE Remove the antenna if you wash the car in a car wash, to avoid it being damaged. For the cleaning of the motorized antenna, see the section headed "Washing", page 201. IB979