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 <[email protected]> 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 <[email protected]> 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 > [email protected] > > *From:* AF <[email protected]> *On Behalf Of *Ken Hohhof > *Sent:* Monday, February 25, 2019 8:27 PM > *To:* 'AnimalFarm Microwave Users Group' <[email protected]> > *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 <[email protected]> *On Behalf Of *Peter Kranz > *Sent:* Monday, February 25, 2019 6:51 PM > *To:* [email protected] > *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 > [email protected] > > -- > 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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