Hardware limitations? SAF Lumina only did 56MHz.
> On Feb 26, 2019, at 3:18 PM, Mathew Howard <[email protected]> wrote: > > Well, I'm just guessing, but what other reason would there be for occupying > 79mhz with a 56mhz radio? > > On Tue, Feb 26, 2019 at 4:08 PM Tim Hardy <[email protected] > <mailto:[email protected]>> wrote: > If that’s the case, it must’ve been truly horrid at 56 MHz. There are > consequences in this wasting of spectrum - you’ll notice that modulations > less than 16 QAM are not currently coordinated or licensed since they fail to > meet the FCC’s minimum of 1 bit/Hz. Any operation of the AF-11 at QPSK or > 1/4 QPSK is not actually legal.. > > Sent from my iPad > > On Feb 26, 2019, at 4:34 PM, Mathew Howard <[email protected] > <mailto:[email protected]>> wrote: > >> 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 <[email protected] >> <mailto:[email protected]>> 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 <[email protected] >> <mailto:[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] >>> <mailto:[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] >>>> <mailto:[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] <mailto:[email protected]> >>>> >>>> From: AF <[email protected] <mailto:[email protected]>> On >>>> Behalf Of Ken Hohhof >>>> Sent: Monday, February 25, 2019 8:27 PM >>>> To: 'AnimalFarm Microwave Users Group' <[email protected] >>>> <mailto:[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] <mailto:[email protected]>> On >>>> Behalf Of Peter Kranz >>>> Sent: Monday, February 25, 2019 6:51 PM >>>> To: [email protected] <mailto:[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] <mailto:[email protected]> >>>> >>>> -- >>>> AF mailing list >>>> [email protected] <mailto:[email protected]> >>>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>>> <http://af.afmug.com/mailman/listinfo/af_af.afmug.com> >>> -- >>> AF mailing list >>> [email protected] <mailto:[email protected]> >>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>> <http://af.afmug.com/mailman/listinfo/af_af.afmug.com> >>> -- >>> AF mailing list >>> [email protected] <mailto:[email protected]> >>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>> <http://af.afmug.com/mailman/listinfo/af_af.afmug.com> >> -- >> AF mailing list >> [email protected] <mailto:[email protected]> >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> <http://af.afmug.com/mailman/listinfo/af_af.afmug.com> >> -- >> AF mailing list >> [email protected] <mailto:[email protected]> >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> <http://af.afmug.com/mailman/listinfo/af_af.afmug.com> > -- > AF mailing list > [email protected] <mailto:[email protected]> > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > <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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