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] <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:
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.
