OWNER 爷 S MANUAL JAC HEAVY DUTY TRUCK STEREO SOUND SYSTEM FM broadcasts are transmitted at high frequency and do not bend to follow the How Car Audio Works earth's surface. Because of this, FM broadcasts generally begin to fade at AM and FM radio signals are broadcast from transmitter towers located short distances from the station. Also, FM signals are easily affected by build 鄄 ings, mountains, or other obstructions. These can result in certain listening around your city. They are intercepted by eth radio antenna on you r car. This signal is then received by the radio and sent to your car speakers. conditions which might lead you to believe a problem exists with your radio.
When a strong radio signal has reached your vehicle, the precise engineering The following conditions are normal and do not indicate radio trouble: of your audio system ensures high quality reproduction. However, in some cases the signal coming to your vehicle is not strong and clear. This can be 荫 Fading - As your car moves away from the radio station, the signal will weaken and sound will begin to fade. When this occurs, we suggest that you due to factors such as the distance from the radio station, closeness of other select another stronger station.
strong radio stations or the presence of buildings, bridges or other large ob 鄄 荫 Flutter/Static - Weak FM signals or large obstructions between the transmitter and your radio can disturb the signal causirng static or fluttering noises to occur. structions in the area. Reducing the treble level may lessen this effect until the disturbance clears. AM signal reception is usually better than FM reception. This is because AM Station Swapping - As a FM signal weakens, another more powerful signal near the same frequency may begin to play. This is because your radio is de 鄄 radio waves are transmitted at low frequency. These long, low frequency radio signed to lock onto the clearest signal.
If this occurs, select another station waves can follow the curvature of the earth rather than travelling straight out in 鄄 to the inosphere. In addition, they curve around obstructions so that they can with a stronger signal. provide better signal coverage. Because of this, clear AM broadcasts can be Multi-Path Cancellation - Radio signals being received from several directions can cause distortion or fluttering. This can be caused by a direct and a re 鄄 received at greater distances than FM broadcasts. flected signal from the same station, or by signals from two stations with close frequencies. If this occurs, select another station until the condition has passed. 60 61