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 <[email protected]> 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 <[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 >>> 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 >>> 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 > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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