BMW Owners Manual for the Radio
This Owner’s Manual is intended to familiarize you with the details of your BMW car radio. You will receive important information regarding its operation, which will allow you to use all the functions quickly and in optimal fashion.
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Selecting a reception range Radio waves — medium wave, long wave and short wave — offer a wide range of reception, because the broadcast signals travel not only along the ground as surface waves, but also as waves bounced back to earth from the ionosphere. Frequency Modulation (FM) provides substantially better sound quality than Amplitude Modulation (AM). However, because FM transmissions rely on lineof- sight broadcast waves, their effective reception range is limited.
Thanks to specially designed systems, limitations inherent in mobile reception quality have been partially minimized:
The Radio Data System (RDS) transmits information in the FM reception range. RDS stations thus offer the following characteristics:
> The station name will be indicated in the display after the RDS signals have been evaluated
> Additional information can be indicated or called up in the display (e. g. text broadcasts from the station, PTY).
However, the reception of RDS data is only possible under favorable reception conditions. If there is weak or interrupted reception, it can take quite a while before the transmitter name appears in the display.
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