Apples and oranges, Josh. Max modulation on the Canopy requires 10 dB of SNR for 4 megabit of throughput. UBNT requires something like 30 dB of SNR (about the same as Canopy 450) for 150 megabit (well, on a 40 MHz channel, which you obviously can't do in 900). Scale that channel size down to the 8 MHz of Canopy 900 and you're doing 30 megabit (7.5x). You'd also gain at least 6 dB from having a smaller channel. That's 7.5x throughput for 2.5x higher SNR requirement.
I'm not here to fight UBNT vs. Canopy because obviously Canopy has a working sync (which you need), but if you're going to say something doesn't work, you also have to disclose that you didn't deploy it in a situation where it would succeed. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com ----- Original Message ----- From: "Josh Luthman" <j...@imaginenetworksllc.com> To: "WISPA General List" <wireless@wispa.org> Sent: Thursday, August 22, 2013 9:31:55 AM Subject: Re: [WISPA] Latest trend for heavy wooded areas Well the one I remember is Canopy and Ubnt on the same tower, both 900. The Canopy would rx more than enough to work while Ubnt wouldn't hear the AP at all. Moving around the trees (similar distance from the tower) the signal would appear strong. Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 On Thu, Aug 22, 2013 at 10:14 AM, Mike Hammett <wispawirel...@ics-il.net> wrote: > Almost every time someone has detailed their installations to me, there just > isn't enough signal to do anything. They're getting a -76 and wondering why > it doesn't work. Increase that another 15 dB and try again. The Canopy will > work a little better because it requires less signal, but it also has > nowhere near the same throughput, so they're really apples and oranges. > > > > > ----- > Mike Hammett > Intelligent Computing Solutions > http://www.ics-il.com > > ________________________________ > From: "Josh Luthman" <j...@imaginenetworksllc.com> > > To: "WISPA General List" <wireless@wispa.org> > Sent: Thursday, August 22, 2013 9:20:24 AM > > Subject: Re: [WISPA] Latest trend for heavy wooded areas > > Ubnt 900 apparently has extremely poor nlos for 900 MHz. I've heard > this a handful of people but haven't tried it myself. > > Josh Luthman > Office: 937-552-2340 > Direct: 937-552-2343 > 1100 Wayne St > Suite 1337 > Troy, OH 45373 > > > On Thu, Aug 22, 2013 at 10:03 AM, Mike Hammett <wispawirel...@ics-il.net> > wrote: >> How is it junk? IIRC, everyone I've asked that claimed a given 900 MHz >> system was junk had a poor RF environment. >> >> >> >> ----- >> Mike Hammett >> Intelligent Computing Solutions >> http://www.ics-il.com >> >> ________________________________ >> From: "Erik Anderson" <erik.ander...@hocking.net> >> To: "WISPA General List" <wireless@wispa.org> >> Sent: Thursday, August 22, 2013 8:49:55 AM >> >> Subject: Re: [WISPA] Latest trend for heavy wooded areas >> >> 98% of our terrain is heavily wooded. Ubiquiti 900 is junk (but their >> other >> products perform quite well when they can be used). Cambium 900 is better. >> Out limited experience with whitespace has been good. All of these >> technologies have very low bandwidth. >> >> On 8/22/2013 12:04 AM, Chris Fabien wrote: >> >> What are you guys deploying lately in heavily wooded areas? We've used >> both >> Cambium pmp320 Wimax and UBNT M900, with mixed results on both. We just >> put >> up a 130ft tower in a heavily wooded river valley area, leaning towards >> the >> UBNT solution but hate putting money into something I'm not really >> satisfied >> with. >> >> >> _______________________________________________ >> Wireless mailing list >> Wireless@wispa.org >> http://lists.wispa.org/mailman/listinfo/wireless >> >> >> >> _______________________________________________ >> Wireless mailing list >> Wireless@wispa.org >> http://lists.wispa.org/mailman/listinfo/wireless >> >> >> _______________________________________________ >> Wireless mailing list >> Wireless@wispa.org >> http://lists.wispa.org/mailman/listinfo/wireless >> > _______________________________________________ > Wireless mailing list > Wireless@wispa.org > http://lists.wispa.org/mailman/listinfo/wireless > > > _______________________________________________ > Wireless mailing list > Wireless@wispa.org > http://lists.wispa.org/mailman/listinfo/wireless > _______________________________________________ Wireless mailing list Wireless@wispa.org http://lists.wispa.org/mailman/listinfo/wireless
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