What is Radio FM? Get The Full Details
What Is Radio FM? Get The Full Details
FM And AM Radio Frequencies:
AM Stands for The Amplitude Modulated AM RADIO carrier frequencies are in the frequency range OF 535-1605 kHz. And Carrier frequencies of 540 to 1600 kHz are assigned at 10 kHz intervals.
And FM radio band ranges between 88 to 108 MHz between VHF television Channel 6 and channel 7. The FM stations are assigned center frequencies at 200 kHz separation starting at 88.1 MHz, for a maximum number of one hundred stations.
These FM stations have a 75 kHz maximum deviation from the center frequency, which leaves 25 kHz upper and lower “gaurd bands” such variation minimizes the interaction with an adjacent frequency band.
FM radios works the same way AM radios do. The difference is in how the carrier wave is modulated, or altered. With AM radios, the amplitude, or overall strength, of the signal is varied to accommodate the sound information.
With FM radio, the frequency- number of times each second that the current changes direction- of the carrier signal is varied.
The FM signals have a great advantage over AM signals. Both signals are susceptible to slight changes in amplitude. With an AM broadcast, these changes result in static.
And With an FM broadcast, slight changes in amplitude don’t matter since the audio signal is conveyed through changes in frequency, the FM receiver can just ignore changes in amplitude. The result is no static and very clear.
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