Each AM radio signal has components ranging from 10 kHz below its carrier freque

Question

Each AM radio signal has components ranging from 10 kHz below its carrier frequency to 10kHz above its carrier frequency. Various radio stations in a given geographical region are assigned different carrier frequencies so that the frequency ranges of the signals do not overlap. Suppose that a certain AM radio transmitter has a carrier frequency of 980 kHz. What type of filter should be used if we want the filter to pass the components from this transmitter and reject the components of all other transmitters? What are the best values for the cutoff frequencies?

Explanation / Answer

Let different carrier frequency be Fc1,Fc2,Fc3 .........and so on. Now we have to use different Band pass filters: For example : BPF ranges : Fc1 -10 to Fc1+10 and Fc2 -10 to Fc2+10 and so on If for example Fc = 980 Khz then BPF range = 980-10 to 980 +10=970 to 990Khz

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