[amsat-bb] Re: S band downlink on P3E

Emily Clarke emily at clarke-design.com
Thu Sep 7 14:08:32 PDT 2006

At 11:38 AM 9/7/2006, Andrew Glasbrenner wrote:
>I am in _TOTAL_ agreement. I live in the suburbs of Tampa/St. Pete and never
>had an interference problem on my 3 foot dish. I have used the same dish to
>log well over a dozen WiFi access points in that immediate neighborhood.
>With properly designed equipment, all that trash on 2.4 ghz goes away with
>some elevation. What won't work is helixes with multiple sidelobes, and
>surplus dishes that let one whole polarity of noise right thru the back.

I agree on the dish completely - when I had a BBQ (non) dish there 
was some noise until I covered it with screen, then it mostly went 
away.  Even then, it was perhaps S-1 above the noise level, not 
anywhere near the S-3 I experience on 70cm and the S-6 I experience 
on 2M.  With AO-51 I use a 2.4G yagi, and have never had any noise 
problems with it either.

Perhaps I've missed something but has the Eagle team published any 
empirical data on the subject?



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