56mhz throughput data capacities vs 80mhz throughput data capacities
is a significant factor. Plus can the AF11 do ACCP (Unless yo use 2
dishes or a custom combiner)? We had a link recently with only
80mhz channels available on vertical. Getting to 4096 QAM is not
easy on longer links (Probably anything over 4-5miles) IMO. I am a
huge fan of Ceragon IP/20/Cambium PTP820 very reliable radios with a
great feature set. The only thing they are missing is a SFP+ port
(Which I believe is coming on a new version)
On Thu, Jan 9, 2020 at 7:27 PM Mike Hammett <[email protected]
<mailto:[email protected]>> wrote:
The efficiency is a dumpster fire. 256 QAM radios have about the
same spectral efficiency.
-----
Mike Hammett
Intelligent Computing Solutions <http://www.ics-il.com/>
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------------------------------------------------------------------------
*From: *"Mathew Howard" <[email protected]
<mailto:[email protected]>>
*To: *"AnimalFarm Microwave Users Group" <[email protected]
<mailto:[email protected]>>
*Sent: *Thursday, January 9, 2020 12:23:41 PM
*Subject: *Re: [AFMUG] Ubiquiti AF-11x licensed links
Well, the efficiency isn't quite that bad. at 1024QAM (they
actually do support 2048QAM now too) they can do somewhere around
350-375Mbps per polarity using a 56mhz channel, which is about
the same as what our old SAF Lumina can do at 256QAM... of course
if you figure that as an 80mhz channel, rather than 56mhz, it's
pretty bad. I'm pretty sure that it doesn't meet the FCC
efficiency requirements at the lowest modulations, but you'd have
to have a pretty poorly engineered link for that to be a problem.
On Thu, Jan 9, 2020 at 11:50 AM Ken Hohhof <[email protected]
<mailto:[email protected]>> wrote:
If I remember right the biggest spectral efficiency problem
with the AF-11x is that it uses both polarizations yet only
gets the throughput of a single pol link. Could be difficult
to license if you can’t get both polarizations. Good news,
if you’re successful getting the license, you should be able
to modify the license and upgrade to a true 1.3+ Gbps full
duplex radio from SIAE, Aviat, Cambium, etc. Bad news, if
you’re pushing the distance such that you can’t run 1024QAM
or better most of the time, you may not meet the FCC minimum
spectral efficiency requirement.
*From:* AF <[email protected]
<mailto:[email protected]>> *On Behalf Of *Mathew Howard
*Sent:* Thursday, January 9, 2020 11:28 AM
*To:* AnimalFarm Microwave Users Group <[email protected]
<mailto:[email protected]>>
*Subject:* Re: [AFMUG] Ubiquiti AF-11x licensed links
Yeah, but the AF11 actually has to use an 80mhz emission
designator, even though it's really only using 56mhz... so
theoretically, if you upgrade the link to radios that can
handle 80mhz, you shouldn't have any problems licensing it.
On Thu, Jan 9, 2020 at 11:11 AM Daniel White
<[email protected] <mailto:[email protected]>> wrote:
You license an emission designatior... not a channel per se.
When you license 56MHz of spectrum you use the 80MHz
channel plan but there isn't 24MHz of unused spectrum
sitting there... it gets used up pretty quickly for other
paths, etc.
So moral of the story... don't do that.
photograph
*Daniel White
*Co-Founder & Managing Director of Operations
*phone:* +1 (702) 470-2766
*direct:* +1 (702) 470-2770
3172 N Rainbow Blvd PMB 20394
Las Vegas, Nevada 89108
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Seth Mattinen wrote on 1/8/20 09:54:
On 1/8/20 8:36 AM, Kurt Fankhauser wrote:
if you have an 80mhz channel and are running
radios in 56mhz channel width can u just put a
2nd link up and split them up to the two 40mhz?
No, that's not allowed. You need to license two 40MHz
channels.
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