FM

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(Frequency Modulation)
(Frequency Modulation)
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== Frequency Modulation ==
== Frequency Modulation ==
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With FM, the carrier frequency is modulated by the audio signal, with the transmitter power remaining constant. FM typically produces better quality signals than [[AM]] when the received signal is strong, but worse quality under poor reception conditions. It is rarely used on [[HF]] frequencies, with the exception of [[CB]] operators in certain countries and [[amateur radio]] operators using the FM in the 10 meter band.   
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With FM, the carrier frequency is modulated by the audio signal, with the transmitter power remaining constant. FM typically produces better quality signals than [[AM]] when the received signal is strong, but worse quality under poor reception conditions. It is rarely used on [[HF]] frequencies, with the exception of [[CB]] operators in certain countries, [[amateur radio]] operators using the FM in the 10 meter band and [[Business_Radio|land mobile radio users]] operating on channelized frequencies in the 25 MHz band and the 29.7 to 29.8 MHz band.   
[[Category: Transmission modes]]
[[Category: Transmission modes]]

Revision as of 17:41, 17 October 2018

Frequency Modulation

With FM, the carrier frequency is modulated by the audio signal, with the transmitter power remaining constant. FM typically produces better quality signals than AM when the received signal is strong, but worse quality under poor reception conditions. It is rarely used on HF frequencies, with the exception of CB operators in certain countries, amateur radio operators using the FM in the 10 meter band and land mobile radio users operating on channelized frequencies in the 25 MHz band and the 29.7 to 29.8 MHz band.



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