You can reduce self interference with GPS. So with limited spectrum
you can optimize it with ABAB. If you need to use adjacent channels on
your APs GPS Sync reduces the problems.
Your own radios are close together so you see them at much higher
levels then your competitors radios. Your backhauls point at your
towers exactly.
For sure in congested areas licensed is the way to go for backhaul.
*Von:*Af [mailto:[email protected]] *Im Auftrag von *Josh Reynolds
*Gesendet:* Sonntag, 19. April 2015 08:54
*An:* [email protected]
*Betreff:* Re: [AFMUG] Very interesting post..
You're not.
Explain to me how single player GPS sync helps in a mixed environment
of various vendors when your equipment is in the beamwidth many other
competitors and your radios suck in the presence of adjacent channel
noise? It doesn't. It doesn't at all. Notch filters would help those
radios in that scenario, but it's not really practical unless you just
like to climb towers for kicks.
Josh Reynolds
CIO, SPITwSPOTS
www.spitwspots.com <http://www.spitwspots.com>
On 04/18/2015 08:19 PM, Mike Hammett wrote:
You may not need the benefits, but it doesn't mean I'm not correct.
-----
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com
<https://www.facebook.com/ICSIL><https://plus.google.com/+IntelligentComputingSolutionsDeKalb><https://www.linkedin.com/company/intelligent-computing-solutions><https://twitter.com/ICSIL>
------------------------------------------------------------------------
*From: *"Jaime Solorza" <[email protected]>
<mailto:[email protected]>
*To: *"Animal Farm" <[email protected]> <mailto:[email protected]>
*Sent: *Saturday, April 18, 2015 11:15:53 PM
*Subject: *Re: [AFMUG] Very interesting post..
Nope. Having great success with no sync using Ubiquiti radios.
Now with new channels even better. Just like Mesh. Not ready for
prime time on my TV...
Jaime Solorza
On Apr 18, 2015 10:11 PM, "Mike Hammett" <[email protected]
<mailto:[email protected]>> wrote:
The more competitors, the *MORE* you need sync.
-----
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com
<https://www.facebook.com/ICSIL><https://plus.google.com/+IntelligentComputingSolutionsDeKalb><https://www.linkedin.com/company/intelligent-computing-solutions><https://twitter.com/ICSIL>
------------------------------------------------------------------------
*From: *"Josh Reynolds" <[email protected]
<mailto:[email protected]>>
*To: *[email protected] <mailto:[email protected]>, "Mathew Howard"
<[email protected] <mailto:[email protected]>>
*Sent: *Saturday, April 18, 2015 8:51:00 PM
*Subject: *Re: [AFMUG] Very interesting post..
AF absolutely has sync?
As far as AirMaxAC, sure, no sync.. At this time.
In the end though, there are a lot of operators that simply
don't care about sync.
Eventually in many markets it will come to a point when you
simply run out of clean frequency, ie: using one or two or
three per tower won't cut it, due to competitors, cell
offload, etc. In that scenario where GPS sync is virtually
useless (because you're picking the best freq per direction),
its pretty obvious that there are a few radios that would
currently excel in that scenario.
There are many places where we are, for instance, where
multiple competitors, city and state links, federal, etc have
towers less than a mile from us. Having the ability to "shrug
off" that adjacent and co channel noise is critical for us.
On April 18, 2015 4:52:38 PM AKDT, Mathew Howard
<[email protected] <mailto:[email protected]>> wrote:
This test ignores a few kind of important details... the
UBNT and Mikrotik AC radios have no ability to sync, which
gives them a significant disadvantage. also, the Mimosa
radios are (theoretically) capable of higher throughput
since they are the only ones with the ability to use two
80mhz channels... granted, it's pretty rare that is
actually possible in the real world, but if you had synced
Mimosas everywhere, it could be done. He's also using a
$499 ePMP radio, when he should be using a $200 Force110 PTP.
That said, the conclusion the the AF5x is the best is
probably right :P
On Sat, Apr 18, 2015 at 5:55 PM, Ken Hohhof
<[email protected] <mailto:[email protected]>> wrote:
If your criterion is performance in the presence of a
signal on a different frequency 30 dB stronger than
the desired signal, this analysis is relevant. Also,
this seems to be the scenario airPrism is designed to
address. But how often would this occur? Even if the
interference is from another non-synced transmitter on
the same tower, you’d think directional antennas would
knock the interfering signal down to less than 1000
times the desired signal.
I guess this could be realistic if you have a point to
point link in the same band as a sector, so that a
giant dish at the other end is pointed right at your
sector.
*From:*Josh Reynolds <mailto:[email protected]>
*Sent:*Saturday, April 18, 2015 5:34 PM
*To:*[email protected] <mailto:[email protected]> ; Seth
Mattinen <mailto:[email protected]>
*Subject:*Re: [AFMUG] Very interesting post..
Horseshit, read the article. Did you miss the portion
where Jim said "it's the exact same chip that's in the
RM5"?
I would have liked to have seen the RM5 in this test
as a baseline, but ignoring the results simply because
it's N tech in the EPMP is silly. Not only does the
throughput drop, but the LEVEL it degrades at is only
"bested" by the B5C in a few of the tests. N or not,
that's a very poor result.
I would love to see other tests posted on this from
other people, its always nice to have multiple sources
to remove any potential level of bias.
Jim did an excellent job on this and should be commended.
On April 18, 2015 2:26:50 PM AKDT, Seth Mattinen
<[email protected] <mailto:[email protected]>> wrote:
On 4/18/15 2:49 PM, Peter Kranz wrote:
Very interesting shootout comparing AF5X, AC-Lite, AC
PTP, EPMP-1000,
B5c and RB922
https://community.ubnt.com/t5/airMAX-Stories/Radio-Shootout-Pt-2-let-s-try-a-whole-bunch-of-them/cns-p/1232309
Dude didn't seem to catch that the ePMP is an N radio and
dismisses it
as worst of the worst. Looks to me like it would probably
hold up
comparably to its AC counterparts if you take that into
consideration.
~Seth
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excuse my brevity.
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brevity.
