The more competitors, the *MORE* you need sync. 



----- 
Mike Hammett 
Intelligent Computing Solutions 
http://www.ics-il.com 



----- Original Message -----

From: "Josh Reynolds" <[email protected]> 
To: [email protected], "Mathew Howard" <[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]> 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] > wrote: 

<blockquote>




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 
Sent: Saturday, April 18, 2015 5:34 PM 
To: [email protected] ; Seth Mattinen 
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] > wrote: 
<blockquote>
On 4/18/15 2:49 PM, Peter Kranz wrote: 

<blockquote>
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 


</blockquote>

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</blockquote>


</blockquote>

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