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50 - Audio equipment and telematics 01-10-2005 51 - Audio equipment and telematics 01-10-2005 RADIO Notes on radio reception Car radio/telephone receivers are subject to phenomena which do not affect domestic radio sets. Both MW/ LW and FM are subject to various forms of interference. This is not a relection on the quality of the equip- ment, but is due to the nature of the signals and the way in which they are transmitted. On MW/LW interference may be noticed when passing under high voltage power lines or bridges, or in tunnels. On FM, interference may be the result of the increasing distance from the transmitter, delection of the signals by obstacles (mountains, hills, build- ings, etc.) or of being in an area which is not covered by a transmitter. Selecting the radio Press "SOURCE" several times. Automatic station search Briely press button M or N to search for the station immediately above or below. The search stops at the irst station found. If the TA trafic programme is select- ed, only the most powerful stations broadcasting this type of programme are selected. Selecting a waveband Briely press button ''BAND/AST'' to select the FM1, FM2 , FMast and AM wavebands. Search sensitivity It is possible to carry out automatic searches at two levels of sensitivity: - To tune in to the most powerful transmitters, select the local search mode "LO" (default option). - To tune in to the weakest or most distant transmitters, select the sen- sitive search mode "DX". The station search is carried out irst in "LO" (local) sensitivity, then in "DX" (distant) sensitivity. To make a direct search in "DX" (dis- tant) sensitivity, press button M or N twice in succession. |