Sorry dude, I love Ubiquity, but 100 subs on a atheros system on a chip at 12/6 -> Impossible. 130 Mbps throughput on a 100 mb ethernet port -> Impossible. 130 Mbps at 15 miles when full modulation at 40 mhz w/2 antennas is 130 Mbps is ->Impossible. YOU haven't tested any of the new UBNT gear, so your suppositions are -> Impossible.
Regards Michael Baird > I never said you had to believe me. I know what we do, what our environment > is like, and what works for us. I know our customers always get 12Mbps, and > we never get support calls. > > On Tue, Aug 18, 2009 at 6:08 PM, Gino Villarini <g...@aeronetpr.com> wrote: > > >> Jason >> >> Im sorry but i find some stated facts very difficult to believe. the 25db >> vs 3db snr ratio is based on the fact that canopy can perform as expected >> with just 3db over noise. MIMO based gear needs about 25 db snr ratio on >> both polarities in order to achieve good performence on 64qam and 2 chains. >> So if your noise floor is -80, youll need a -55 signal to get the high >> performance. I guessing hte nano / loco units would be good for really >> close clients, rocket dish for all others >> >> Gino >> >> ________________________________ >> >> From: wireless-boun...@wispa.org on behalf of Jayson Baker >> Sent: Tue 8/18/2009 7:44 PM >> To: WISPA General List >> Subject: Re: [WISPA] Bullet M5 HP >> >> >> >> MIMO (especially dual-pol) gets you much better performance. Cell phone >> companies have been doing this for years and years. >> >> You're 3dB vs 25dB comment is misleading. UBNT may need a received level >> of >> -70dBm to achieve higher speeds... but, so does a Canopy. You can't expect >> to achieve anything on a Canopy with, say, a -97dBm signal. Furthermore, >> UBNT will actually link around -95dBm and work, albeit slow. Canopy will >> say "SCANNING" >> >> We have tested these products, and have networks deployed both here in the >> states and in Costa Rica. You wouldn't think it, but Costa Rica has >> waaaaaaay more noise than we do here. The government uses 2.4 and 5GHz for >> random things, people have way overamp'ed equipment, there are a ton of >> little WISP's, etc. Canopy down there performs as expected... a couple >> mbps >> up, a couple mbps down. UBNT MIMO blows it away, especially with AirMax >> and >> in a noisy environment. >> >> When testing the MIMO you can't just run a single stream, they work best >> with many streams. We have seen about 130Mbps on a full-duplex on a >> deployed link, around 15 miles, in a noisy environment. With the PtMP >> equipment, we see similar results. With the older non-N non-MIMO >> equipment, >> we have seen up to 100+ subs on a single PowerStation AP, all getting at >> least 12Mbps/6Mbps, and latency always under 10ms. >> >> I get it, it's a Motorola list. We're on here because we use some of that >> too. Not much, anymore, because there are much better products out there. >> I'm sure this will start a flame war, as talk of anything other than Canopy >> always does, and I don't really care. The equipment is cheap enough, if >> you >> want to see it for yourself buy some and put it in. When you see it works >> as well as we've seen, you, too, can offer your subs 12Mbps for $25/mo and >> make killer profits. Our ROI on a new install is 1 Day. We make money the >> day it's installed. And it just works, we never have customers calling to >> complain. >> >> Cheers! >> >> On Tue, Aug 18, 2009 at 5:07 PM, Tom DeReggi <wirelessn...@rapiddsl.net >> >>> wrote: >>> >>> Yeah, but its misleading garbage specs. >>> >>> Mimo adds very little in noisy environments, where double size channels >>> >> and >> >>> both polarities can't be both used based on spectrum availabilty, not to >>> mention specifying gross speed instead of actual speeds. >>> >>> I'm not saying the Ubiquiti isn't a really nice needed product, I'm just >>> saying, in real world use, I'm not certain its faster than Motorola >>> >> PtMP, >> >>> including advantage series. (per Mhz wide channel efficiency). Don't >>> >> forget >> >>> the 3b SNR required by canopy and the 25db snr required by Ubiquiti for >>> high >>> modulations, which is rarely acheived in PtMP. Remember, a flaky >>> packetlossy link is going to bring TCP down to its knees in throuhgput >>> reduction. >>> >>> The most exciting thing about teh new product is its inferred that there >>> might be a low cost dual pol sector antenna available now? >>> >>> Tom DeReggi >>> RapidDSL & Wireless, Inc >>> IntAirNet- Fixed Wireless Broadband >>> >>> >>> ----- Original Message ----- >>> From: "Paul Hendry" <paul.hen...@skyline-networks.com> >>> To: "wireless" <wireless@wispa.org> >>> Sent: Tuesday, August 18, 2009 11:59 AM >>> Subject: Re: [WISPA] Bullet M5 HP >>> >>> >>> >>>> Anyone had a chance to fully test any of Ubiquiti's claims like >>>> >> 150+mbps >> >>>> "real" throughput and 300+ subscribers per AP? Much more impressive >>>> numbers than Canopy. >>>> >>>> >>>> >>>> Matt wrote: >>>> >>>>>> Ubiquity has introduced their new product lines, at www.ubnt.com. >>>>>> Looking to take Canopy on. >>>>>> >>>>>> >>>>> Anything like GPS sync for frequency reuse? >>>>> >>>>> Matt >>>>> >>>>> >>>>> >>>>> >> -------------------------------------------------------------------------------- >> >>>>> WISPA Wants You! Join today! >>>>> http://signup.wispa.org/ >>>>> >>>>> >> -------------------------------------------------------------------------------- >> >>>>> WISPA Wireless List: wireless@wispa.org >>>>> >>>>> Subscribe/Unsubscribe: >>>>> http://lists.wispa.org/mailman/listinfo/wireless >>>>> >>>>> Archives: http://lists.wispa.org/pipermail/wireless/ >>>>> >>>>> >>>> >>>> >> -------------------------------------------------------------------------------- >> >>>> WISPA Wants You! Join today! >>>> http://signup.wispa.org/ >>>> >>>> >> -------------------------------------------------------------------------------- >> >>>> WISPA Wireless List: wireless@wispa.org >>>> >>>> Subscribe/Unsubscribe: >>>> http://lists.wispa.org/mailman/listinfo/wireless >>>> >>>> Archives: http://lists.wispa.org/pipermail/wireless/ >>>> >>>> -- >>>> This message has been scanned for viruses and >>>> dangerous content by MailScanner, and is >>>> believed to be clean. >>>> >>>> >>>> >>>> >>>> >>>> >>>> >> -------------------------------------------------------------------------------- >> >>>> WISPA Wants You! 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Join today! >> http://signup.wispa.org/ >> >> -------------------------------------------------------------------------------- >> >> WISPA Wireless List: wireless@wispa.org >> >> Subscribe/Unsubscribe: >> http://lists.wispa.org/mailman/listinfo/wireless >> >> Archives: http://lists.wispa.org/pipermail/wireless/ >> >> >> >> >> >> >> -------------------------------------------------------------------------------- >> WISPA Wants You! Join today! >> http://signup.wispa.org/ >> >> -------------------------------------------------------------------------------- >> >> WISPA Wireless List: wireless@wispa.org >> >> Subscribe/Unsubscribe: >> http://lists.wispa.org/mailman/listinfo/wireless >> >> Archives: http://lists.wispa.org/pipermail/wireless/ >> >> > > > -------------------------------------------------------------------------------- > WISPA Wants You! Join today! > http://signup.wispa.org/ > -------------------------------------------------------------------------------- > > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
