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Radio Data System, or RDS, is a communications protocol standard for embedding small amounts of digital information in conventional FM radio broadcasts. RDS standardises several types of information transmitted, including time, station identification and programme information.
AF (alternative frequencies)This allows a receiver to re-tune to a different frequency providing the same station when the first signal becomes too weak (e.g., when moving out of range). This is often utilized in car stereo systems.
Source: wikipedia
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What is a RDS?
RDS stands for Radio Data System. It is used to embed small amounts of digital information in FM radio broadcasts.
What is rds?
RDS (abbreviated for Radio Dimensione Suono) is one of Italy's major radio station networks with its main studios in Rome. Radio Data Systems (RDS) is a sub-frequency of FM radio, sent along with a normal music signal. It allows text to be displayed on RDS-enabled radios. Song and artist names can scroll across the stereo screen. RDS is available in various vehicle models offered by leading automakers.
What is the purpose of an AF power amplifier in a FM broadcast receiver?
After FM demodulation to the original AF signal it is necessary to amplify the weak AF signal to have enough power to drive speakers. That is the purpose.
What makes FM radios different from AM radios?
AM radio is KHz FM radio is MHz AM radio can cover the world. FM radio can cover a county. AM radio is excellent in communication. FM radio is completely worthless, except for good sound quality. AM radio doesn't have as good sound quality as FM. FM is much higher on the radio spectrum than AM.
What are the differences between AM and FM radio?
The main difference between AM and FM radio is the dial-in number and the amount of static each receive. AM radio preceded FM radio, with FM becoming popular in the 1950s.
