introduction:
In this blog we talking about radio wave propagation modes and explication about it:  
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1  Ground Wave Propagation
Follows contour of the earth Can Propagate considerable distances
Frequencies up to 2 MHz. Example : AM radio    


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2  Sky Wave Propagation
Signal reflected from ionized layer of atmosphere. Signal can travel a number of hops, back and forth. Examples  SW radio


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3  Line-of-Sight Propagation
Transmitting and receiving antennas must be within line of sight.
Example :-
Satellite communication
Ground communication


* Take one of them and explain it in more details.
 



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