Well, comparing bits/mhz/$, I really don't think anything else comes close to the AF11... the B11 might beat it on bits/$ (it's close anyway, and it has the advantage of more overall capacity... and SFP), and plenty of other radios can beat it on bits/mhz, but comparing all three the AF11 is a pretty clear winner.
So what it really comes down to, is if it can handle enough bandwidth for a given link in the available spectrum. On Sat, Jan 14, 2017 at 5:07 AM, Gino Villarini <[email protected]> wrote: > I’ll guess that is the way to get them produced at way lower price… > > I always use the bits/mhz/$ when comparing radios > > From: Af <[email protected]> on behalf of Josh Reynolds < > [email protected]> > Reply-To: "[email protected]" <[email protected]> > Date: Saturday, January 14, 2017 at 12:56 AM > To: "[email protected]" <[email protected]> > Subject: Re: [AFMUG] Our UBNT AF11x experience > > There's an ongoing discussion about this. It seems it has to do with the > hitless ARQ modulation change support. > > Basically, it's a trade-off. > > > > *Gino Villarini* > President > Metro Office Park #18 Suite 304 Guaynabo, Puerto Rico 00968 > > On Jan 13, 2017 10:14 PM, "Mike Hammett" <[email protected]> wrote: > >> I love how Gary says they use so much better, newer technology... but >> they get worse throughput. *sigh* >> >> >> >> ----- >> 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> >> Midwest Internet Exchange <http://www.midwest-ix.com/> >> <https://www.facebook.com/mdwestix> >> <https://www.linkedin.com/company/midwest-internet-exchange> >> <https://twitter.com/mdwestix> >> The Brothers WISP <http://www.thebrotherswisp.com/> >> <https://www.facebook.com/thebrotherswisp> >> >> >> <https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg> >> ------------------------------ >> *From: *"Tim Hardy" <[email protected]> >> *To: *[email protected] >> *Sent: *Friday, January 13, 2017 5:54:53 PM >> *Subject: *Re: [AFMUG] Our UBNT AF11x experience >> >> Post 6 here discusses the use of ARQ rather than FEC. >> >> https://community.ubnt.com/t5/airFiber/AF11x-Capacity/td-p/1737631 >> ------------------------------ >> *From:* Af <[email protected]> on behalf of George Skorup < >> [email protected]> >> *Sent:* Friday, January 13, 2017 6:41:10 PM >> *To:* [email protected] >> *Subject:* Re: [AFMUG] Our UBNT AF11x experience >> >> Which I don't understand. Sounds like strong FEC? >> >> On 1/13/2017 5:36 PM, Ken Hohhof wrote: >> >> According to Link Planner, PTP820S (IP20S) gets around 243M at 256QAM, >> 347M at 2048QAM (350M with header compression). So add that to George’s >> Trango/Exalt/SAF list. >> >> >> >> *From:* Af [mailto:[email protected] <[email protected]>] *On >> Behalf Of *Chris Gustaf >> *Sent:* Friday, January 13, 2017 5:20 PM >> *To:* [email protected] >> *Subject:* Re: [AFMUG] Our UBNT AF11x experience >> >> >> >> Real usable capacity at Layer 2 Ethernet depends on several variables >> besides the modulation level and the regulatory bandwidth. For 1024 QAM >> there are 10 bits per symbol so theoretically one would expect to get 400 >> Mbps in a 40 MHz channel (10 bits x 40 MHz symbol rate). >> >> >> >> To actually make a radio that meets FCC spectrum masks, a reduction of >> the symbol rate down to around 35 MHz is required plus filtering, giving a >> max of 350 Mbps over the air. >> >> >> >> After that, Forward Error Correction (FEC) is required which is typically >> around 85-90 % for most microwave radios using LDPC, giving a net >> throughput of around 300 to 315 Mbps. >> >> >> >> Add header compression at layer 2 which in the worst case for large >> packets adds about 2.5 % improvement and you get to around 325 Mbps, which >> is what Trango and others get on a single 40 MHz channel with the newest >> technology. >> >> >> >> Ubiquiti maybe using a lower FEC rate like 75-80% (or a lower symbol rate >> if the filtering is not steep enough) and no header compression, which >> would give them about 250 Mbps for large packets. >> >> >> >> Hope that helps! >> >> >> >> Chris Gustaf >> >> Trango Systems >> >> >> >> On Fri, Jan 13, 2017 at 2:39 PM, Mathew Howard <[email protected]> >> wrote: >> >> What other radios will only do 250Mbps (502.4Mbps capacity according to >> the data sheet...) on one 40mhz single polarity channel at 256qam? The >> other's I've looked at are typically around 300Mbps... >> >> Not that I'm saying the AF11 is a bad radio, I plan on putting up at >> least a few of them this year... but I find it a little funny that they use >> 1024qam as a selling point, when it can't do as much throughput at 1024qam >> as other radios do at 256qam. >> >> >> >> On Fri, Jan 13, 2017 at 4:19 PM, Eric Kuhnke <[email protected]> >> wrote: >> >> I think this whole thread can be summed up that there's no magical way to >> get around the shannon limit and bps/Hz coding efficiency for a given >> channel size and modulation... From the technical perspective of people >> who have to really understand the FDX capacity of a new PTP link, the ubnt >> marketing department is divorced from reality, it's not 1200 Mbps no matter >> how many slick PDFs they publish. >> >> One 40 MHz channel single polarity at 1024QAM 5/6 code rate is going to >> be nearly the same efficiency bps/Hz from many different manufacturers. >> Multiply as necessary for dual polarity or for larger channel sizes such as >> 60, 80 or 112 MHz. >> >> >> >> On Fri, Jan 13, 2017 at 9:38 AM, Faisal Imtiaz <[email protected]> >> wrote: >> >> FYI... on a "single" 40mhz channel 'dual polarity' (mimo) the expected >> throughput on Af11x is 500meg duplex. >> >> >> >> Faisal Imtiaz >> Snappy Internet & Telecom >> 7266 SW 48 Street >> Miami, FL 33155 >> Tel: 305 663 5518 x 232 <%28305%29%20663-5518> >> >> Help-desk: (305)663-5518 <%28305%29%20663-5518> Option 2 or Email: >> [email protected] >> >> >> ------------------------------ >> >> *From: *"Josh Baird" <[email protected]> >> *To: *[email protected] >> *Sent: *Friday, January 13, 2017 10:30:10 AM >> >> >> *Subject: *Re: [AFMUG] Our UBNT AF11x experience >> >> But if I can get 80mhz channels in both polarities (running at >> 56Mhz/1024QAM with this radio), I should be able to at least double he >> capacity of my PTP-800 link which can do 228Mbps. Right? >> >> >> >> On Thu, Jan 12, 2017 at 5:55 PM, Mike Hammett <[email protected]> wrote: >> >> At 40 MHz and a single polarity, you're looking at an almost >> insignificant increase in throughput. >> >> Their claim is 1.2 gb+. >> Cut that in half as they're advertising the aggregate, so 600 mb+. >> That's using both polarities, so now only 300 mb+. >> Only I haven't heard of anyone getting much more than 500 in a single >> direction (they may certainly exist, I just haven't seen them), so now that >> 300 is really only 250. >> >> >> Not much of an upgrade unless you can also get larger channels in both >> polarities. >> >> >> >> ----- >> Mike Hammett >> Intelligent Computing Solutions <http://www.ics-il.com/> >> >> *Midwest Internet Exchange* >> >> *The Brothers WISP* >> >> >> >> <https://www.facebook.com/ICSIL> >> >> ------------------------------ >> <https://www.facebook.com/ICSIL> >> >> *From: *"Josh Baird" <*[email protected]*> >> *To: **[email protected]* >> *Sent: *Thursday, January 12, 2017 11:47:42 AM >> *Subject: *Re: [AFMUG] Our UBNT AF11x experience >> <https://www.facebook.com/ICSIL> >> >> This PTP800 is only capable of running at 40Mhz (ODU-A) so it can only do >> 228Mbps full-duplex. The AF11x should be able to do much more than that, >> right? <https://www.facebook.com/ICSIL> >> >> <https://www.facebook.com/ICSIL> >> >> On Thu, Jan 12, 2017 at 12:05 PM, Gino Villarini <*[email protected]*> >> wrote: <https://www.facebook.com/ICSIL> >> >> IIRC, PTP800 is Remec Style, you'll need Remec to N connector adapters >> (AF11x is N) <https://www.facebook.com/ICSIL> >> >> <https://www.facebook.com/ICSIL> >> >> What do you expect to achieve with this upgrade? Not much capacity >> difference between PTP800 and AF11x, maybe 50-80- mbps more. Only if you >> have a xpic license you can double your throughput with the af11x >> <https://www.facebook.com/ICSIL> >> >> <https://www.facebook.com/ICSIL> >> >> *From: *Af <*[email protected]*> on behalf of Josh Baird < >> *[email protected]*> >> *Reply-To: *"*[email protected]*" <*[email protected]*> >> *Date: *Thursday, January 12, 2017 at 9:12 AM >> *To: *"*[email protected]*" <*[email protected]*> >> *Subject: *Re: [AFMUG] Our UBNT AF11x experience >> <https://www.facebook.com/ICSIL> >> >> <https://www.facebook.com/ICSIL> >> >> Good news - thanks for sharing. <https://www.facebook.com/ICSIL> >> >> <https://www.facebook.com/ICSIL> >> >> Somewhat un-related question: <https://www.facebook.com/ICSIL> >> >> <https://www.facebook.com/ICSIL> >> >> I have a PTP-800 link using these dishes: >> <https://www.facebook.com/ICSIL> >> >> <https://www.facebook.com/ICSIL> >> >> >> *http://www.hol4g.com/AC/product.aspx?number=ANC-VHLP3-11W-RR1&p=237127&sc=0* >> <https://www.facebook.com/ICSIL> >> >> <https://www.facebook.com/ICSIL> >> >> Do you know if I can re-use these dishes with the AF11x? Do I need >> adapters? <https://www.facebook.com/ICSIL> >> >> <https://www.facebook.com/ICSIL> >> >> Josh <https://www.facebook.com/ICSIL> >> >> <https://www.facebook.com/ICSIL> >> >> <https://www.facebook.com/ICSIL> >> >> >> >> *Gino Villarini* >> >> President >> >> Metro Office Park #18 Suite 304 Guaynabo, Puerto Rico 00968 >> >> <https://www.facebook.com/ICSIL> >> >> <https://www.facebook.com/ICSIL> >> >> On Thu, Jan 12, 2017 at 8:07 AM, Gino Villarini <*[email protected]*> >> wrote: <https://www.facebook.com/ICSIL> >> >> Hey all, just dropping by to share our experience with AF11x, we habe >> been beta testing the unit since Sept and for the last 3 months, the unit >> has been rock solid. <https://www.facebook.com/ICSIL> >> >> <https://www.facebook.com/ICSIL> >> >> We are very happy with its performance, just wished it had a SFP port! >> <https://www.facebook.com/ICSIL> >> >> <https://www.facebook.com/ICSIL> >> >> This unit replaced a Mimosa B11 unit that we were having some intermitent >> throughtput issues, <https://www.facebook.com/ICSIL> >> >> <https://www.facebook.com/ICSIL> >> >> The swap was easy since we reused the Jirous Dishes and only had to add >> the af11x adapters to it, <https://www.facebook.com/ICSIL> >> >> <https://www.facebook.com/ICSIL> >> >> The link went live on 9/21/16 and on the first weeks we experienced some >> lockups, but after a revised beta fw was applied, all issues went away. >> <https://www.facebook.com/ICSIL> >> >> <https://www.facebook.com/ICSIL> >> >> For UBNT, please add SFP port and continue the good work towards a af6x >> and af18x <https://www.facebook.com/ICSIL> >> >> <https://www.facebook.com/ICSIL> >> >> >> >> *Gino Villarini* >> >> President >> >> Metro Office Park #18 Suite 304 Guaynabo, Puerto Rico 00968 >> >> <https://www.facebook.com/ICSIL> >> >> <https://www.facebook.com/ICSIL> >> >> <https://www.facebook.com/ICSIL> >> >> <https://www.facebook.com/ICSIL> >> >> <https://www.facebook.com/ICSIL> >> >> <https://www.facebook.com/ICSIL> >> >> <https://www.facebook.com/ICSIL> >> >> <https://www.facebook.com/ICSIL> >> >> <https://www.facebook.com/ICSIL> >> >> >> >>
