> Are you sure 433Mhz are covering indeed 30miles even LOS?
> I've translated into Km and (if I didn't mistake ) it's about 48Km.
> So what power (EIRP) has your transciever?

You can do 30 miles LOS if you are high enough at each end and there 
are no high spots too close to the ends. Fresnel zones that occur if 
you don't meet the preceding requirememnts kill your link quite well 
in most cases.


        Russell

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