PTP820 - why buy from Cambium instead of direct from Ceragon?
> On Jan 9, 2020, at 8:42 PM, Erich Kaiser <[email protected]> wrote: > > 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]> wrote: >> The efficiency is a dumpster fire. 256 QAM radios have about the same >> spectral efficiency. >> >> >> >> ----- >> Mike Hammett >> Intelligent Computing Solutions >> >> Midwest Internet Exchange >> >> The Brothers WISP >> >> >> >> >> From: "Mathew Howard" <[email protected]> >> To: "AnimalFarm Microwave Users Group" <[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]> 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]> On Behalf Of Mathew Howard >>> Sent: Thursday, January 9, 2020 11:28 AM >>> To: AnimalFarm Microwave Users Group <[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]> 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. >>> >>> >>> >>> >>> >>> 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 >>> >>> >>> >>> >>> >>> 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. >>> >>> >>> >>> -- >>> AF mailing list >>> [email protected] >>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>> >>> -- >>> AF mailing list >>> [email protected] >>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> >> -- >> AF mailing list >> [email protected] >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> >> -- >> AF mailing list >> [email protected] >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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