Frequency Modulation Communications 

Three common methods (called "modulation") of voice communication are used. A.M. (Amplitude Modulation), S.S.B. (Single Side Band), and F.M. (Frequency Modulation). 

Commonly used on V.H.F. and above by Amateur Radio Operators and commercial broadcasters. Changes the FREQUENCY (tuning) according to how load the voice is.     Requires the most space of all the modulation methods. Sound quality can be very good. Is technically more difficult to receive that the other two methods, but is easier to transmit. 

 


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