Radio - Interference

85porsche03

Subject:

Radio Interference
Model

911 Carrera
Group

9
Part Identifier

91..
Number

8507
September 20, 1985
Radio interference complaints may be caused by either external factors, vehicle components, or radio system failure. Therefore, a clear differentiation must be made between these areas of possible problems.

Below is a troubleshooting guide for radio reception interference:

1. Interference due to external factors.

Radio reception could be influenced by the following factors:

-landscape (mountains, trees, poles, buildings) -reflection of radio waves (multiple reception) -weak broadcasting stations -stations with changing broadcasting power -transmitter frequency not adjusted precisely in radio -transmitter or frequency overlap (large signal) -weather clouds (high pressure area) -interference could be considerably stronger for stereo reception than for mono reception -strongly changing reception signals



2. Interferences from Engine Components






3. Interference from other components



Body end installation: M 6 x 20 hex. hd. screw, nut and washer. Hold screw in position with tape to make installation easier.