Wes wrote:
Hmm. I've lived in AZ for over 60 years (almost 50 of them as a ham)
and am well familiar with dust storms and static build up on antennas
but I've never heard of it being called precipitation static.

Here's the definition of precipitation static.

http://www.atis.org/tg2k/_precipitation_static.html
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73, Cecil http://www.w5dxp.com