Acorns?
https://www.youtube.com/watch?v=cZkAP-CQlhA


From: TJ Trout 
Sent: Saturday, October 24, 2015 7:45 PM
To: [email protected] 
Subject: Re: [AFMUG] 20+db swing

bad antenna

On Fri, Oct 23, 2015 at 2:06 PM, Dennis Burgess <[email protected]> wrote:

  Atmospheric.  



  Dennis Burgess, CTO, Link Technologies, Inc.

  [email protected] – 314-735-0270 x103 – www.linktechs.net



  From: Af [mailto:[email protected]] On Behalf Of Keefe John
  Sent: Friday, October 23, 2015 12:31 PM
  To: [email protected]
  Subject: Re: [AFMUG] 20+db swing



  signal can change from thermal ducting

  On 10/23/2015 11:40 AM, Dennis Burgess wrote:

    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] – 314-735-0270 x103 – 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:







    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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