Yeah, but my point is that they made a really noisy 56mhz radio work by just occupying a full 80mhz channel... at least that's the way I understand it. It seems like they're kind of doing the same thing here.
On Tue, Feb 26, 2019 at 3:24 PM Tim Hardy <thardy...@gmail.com> wrote: > While the AF-11 used a 56 MHz chipset, the radio occupies 79.6 MHz - > unlike all other radios with these chips that limit their bw to 56 MHz > (this used to be the ETSI maximum). The AF-11 system gain is horrible for > 1024 QAM when compared to other outdoor radios - either full 60 MHz or full > 80 MHz bw. > > Sent from my iPad > > On Feb 26, 2019, at 3:26 PM, Mathew Howard <mhoward...@gmail.com> wrote: > > Interesting, so I'm guessing that they're able to reduce the noise to an > acceptable level at that high of power by using a narrower channel... kind > of like what Ubiquiti did with the AirFiber 11. > > On Tue, Feb 26, 2019 at 1:54 PM Tim Hardy <thardy...@gmail.com> wrote: > >> >> Just an FYI.. >> According to this chart, the occupied bandwidth is only 64.5 MHz so you >> will be losing capacity vs radios that occupy the full 80 MHz bandwidth. >> The DW radio will have to be coordinated and licensed in one of the 80 MHz >> channel allocations as there are no FCC channel plans between 51 MHz and 79 >> MHz. There are only 4-channel pairs available at 80 MHz and its difficult >> to coordinate multiple pairs in many areas as a result. Finally, while >> these power levels are impressive, they don't tell the full story and you >> really need to compare the system gain values at the desired modulations. >> The DW 64.5 MHz radio’s system gain at 2048 QAM is 83 dB vs. the WTM 4100 >> 80 MHz radio’s system gain at 2048 QAM which will be 73.5 dB. >> >> On Feb 26, 2019, at 12:19 PM, Peter Kranz <pkr...@unwiredltd.com> wrote: >> >> +31 is the advertised 2048QAM output on the HP variant. Dragonwave >> contacted me offline and is indicating a March availability. Here is the >> table of power output levels for that radio. It should also support >> 4096QAM, but I’m not sure if that’s available in the software yet. >> >> <image001.png> >> >> >> *Peter Kranz*www.UnwiredLtd.com <http://www.unwiredltd.com/> >> Desk: 510-868-1614 x100 >> Mobile: 510-207-0000 >> pkr...@unwiredltd.com >> >> *From:* AF <af-boun...@af.afmug.com> *On Behalf Of *Ken Hohhof >> *Sent:* Monday, February 25, 2019 8:27 PM >> *To:* 'AnimalFarm Microwave Users Group' <af@af.afmug.com> >> *Subject:* Re: [AFMUG] Higher power 18Ghz radios.. >> >> Looks like PTP820c is only +16. >> >> You’re talking about xmt power actually at 2048QAM modulation, right? >> +31 is hard to believe. >> >> I remember hearing that Broadcom was supposed to have a chip with >> adaptive digital predistortion for high xmt power also 4096QAM not sure if >> that became real. >> >> *From:* AF <af-boun...@af.afmug.com> *On Behalf Of *Peter Kranz >> *Sent:* Monday, February 25, 2019 6:51 PM >> *To:* af@af.afmug.com >> *Subject:* [AFMUG] Higher power 18Ghz radios.. >> >> Dragonwave announced over a year ago the Harmony Enhanced 18HP, with +31 >> TX power at 2048 QAM, but have never made it to production as far as I >> know. From the top of my head, here are some of the major radios TX power >> in 18 Ghz band: >> >> Dragonwave Harmony Enahcend HP – 31 <Vaporware?> >> Dragonwave Harmony Enhanced SP – 22 >> Bridgewave Navigator – 19 >> Aviat WTM 4200 – 17.5 >> SIAE AlfoPlus2 – 17 >> >> Curious if anyone is aware of an 18Ghz dual core radio capable of higher >> TX power at 2048QAM? It’s quite difficult to license 6Ghz or 11Ghz paths in >> my market. >> >> >> *Peter Kranz*www.UnwiredLtd.com <http://www.unwiredltd.com/> >> Desk: 510-868-1614 x100 >> Mobile: 510-207-0000 >> pkr...@unwiredltd.com >> >> -- >> AF mailing list >> AF@af.afmug.com >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> >> >> -- >> AF mailing list >> AF@af.afmug.com >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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