Signal don't change unless you have rain, etc.  The last two things are wind 
(antenna alignment) and tx power.  That's it..

Dennis Burgess, CTO, Link Technologies, Inc.
[email protected]<mailto:[email protected]> - 314-735-0270 x103 - 
www.linktechs.net<http://www.linktechs.net/>

From: Af [mailto:[email protected]] On Behalf Of Scott Vander Dussen
Sent: Friday, October 23, 2015 11:31 AM
To: [email protected]
Subject: [AFMUG] 20+db swing

17 mile link, 11GHz, 3' dishes- it's worked fine for years and over the past 
few months there has been an increasing fluctuation with signal quality.  SAF 
support suggested we were too high on one side and actually lowering it would 
help, it didn't change.  We've verified LOS, even switched out to a DragonWave 
11ghz pair of radios and it exhibited the same behavior as the SAF.  We then 
moved one side of the link to a different tower about 6 miles away (still makes 
overall link 17 miles) and we're getting the exact same behavior.  In years' 
past the signal was consistent, now we're seeing this:

[cid:[email protected]]

Am I missing something?  Same behavior with two different radios, frequencies, 
and towers.  There are no environmental conditions like moisture, etc. that are 
obvious culprits.


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