Just checked, 4200 80 MHz 18 GHz is coming soon.. Sent from my iPad
> On Feb 26, 2019, at 6:41 PM, Tim Hardy <[email protected]> wrote: > > I was looking at 4100 - let me research this.. > > Sent from my iPad > >> On Feb 26, 2019, at 5:58 PM, Peter Kranz <[email protected]> wrote: >> >> @Tim.. >> >> WTM platform may not support 80Mhz channel in 18Ghz, you may be stuck with >> 50 Mhz according to the technical datasheet: >> >> <image002.png> >> <image003.png> >> So, reviewing… The delta between 64Mhz and 80Mhz is not that high.. ~118 >> Mbps or around 9% which is interesting given the 25% more theoretical BW. >> >> Aviat 50 Mhz/2048QAM = 850 Mbps >> Aviat 80Mhz/2048QAM = 1370 Mbps >> DW 64 Mhz/2048 QAM = 1252 Mbps >> >> Peter Kranz >> www.UnwiredLtd.com >> Desk: 510-868-1614 x100 >> Mobile: 510-207-0000 >> [email protected] >> >> From: AF <[email protected]> On Behalf Of Tim Hardy >> Sent: Tuesday, February 26, 2019 11:53 AM >> To: AnimalFarm Microwave Users Group <[email protected]> >> Subject: Re: [AFMUG] Higher power 18Ghz radios.. >> >> >> 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
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