Are you using the adaptive modulation feature? Scott Carullo Technical Operations 877-804-3001 x102
---------------------------------------- From: "David E. Smith" <d...@mvn.net> Sent: Wednesday, September 29, 2010 3:01 PM To: "WISPA General List" <wireless@wispa.org> Subject: Re: [WISPA] 11GHz fade margin On Tue, Sep 28, 2010 at 11:51, Marco Coelho <coelh...@gmail.com> wrote: I'm looking at deploying some 11GHz gear. I would like to do one path in two 27 Mile Hops. Using 6' dishes I show a fade margin of 19db. Is this adequate for 11GHz at that rage? At 5GHz - 6GHz, I would be fine with it. I have a pair of Trango Apex radios in that band, for a 22-mile link. Four foot antennas. One side is about 130' AGL, the other is (I think) 250'. There have been some thermal ducting issues over the last few months - at least I assume it's thermal ducting. Occasionally, for a minute or two the link will lose 15-20 points of SNR, and that often pushes the error rate high enough that the radios temporarily lose modem lock. Almost always happens just before or after dawn (give or take an hour). It usually fixes itself within a minute or two, fortunately. Probably qualifies for four-nines reliability, which is "good enough" for my purposes. David Smith MVN.net
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