A slang term used by cb radio users. A shortening of the term "standing wave ratio"
All radio transmitters including FM and AM Digital TV radio amateurs etc. must adjust the standing wave ratio of the aerial being used to maximise efficiency and prevent damage to the transmitter ex.; "You must adjust the swar of the aerial if you wish to get maximum power out" " I cannot hear anyone on my cb because my swar is too high" " Hey big chap my aerial must be broke cause the swar`s went sky high "
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