Increasing the bass level may reduce static and fluttering. Static and fluttering: These occur when signals are blocked by buildings, trees or other large objects. If this happens, the signals will cancel each other out, causing a momentary flutter or loss of reception.

Multi-path: FM signals are reflective, making it possible for 2 signals to reach the vehicle’s antenna at the same time. They are often accompanied by distortion. Once outside this range, you may notice fading and drifting, which increase with the distance from the radio transmitter. Here are some common reception problems that may not indicate a problem with the radio as described.įading and drifting stations: Generally, the effective range of FM is about 25 miles (40 km). In addition, reception conditions change constantly as the vehicle moves. The farther the vehicle is from a station, the weaker its signal will be. And of course, radio signals have a limited range. Power lines or phone wires can interfere with AM signals. Usually, a problem with radio reception does not mean there is a problem with the radio it is just the normal result of conditions outside the vehicle.įor example, nearby buildings and terrain can interfere with FM reception. To avoid damage to the audio/visual system:īe careful not to spill beverages over the audio/visual system. However, this does not indicate a malfunction. The use of a cellular phone inside or near the vehicle may cause a noise from the speakers of the audio/visual system which you are listening to.

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