NZ does not suport the SWS, therefor you will never recieve a SWS message, however cos the likes of large farm machinery are built for the world you will get, say a tractor in NZ emiting a band width (shit you seen in a tractor these days the amount of eletronics etc are like a 747) a detector like my escort will pick up a signal if SWS is switched on, as a k or ka.
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