Aviat..
Peter Kranz <http://www.unwiredltd.com/> www.UnwiredLtd.com Desk: 510-868-1614 x100 Mobile: 510-207-0000 <mailto:pkr...@unwiredltd.com> pkr...@unwiredltd.com From: TJ Trout <t...@voltbb.com> Sent: Tuesday, January 05, 2021 2:01 PM To: AnimalFarm Microwave Users Group <af@af.afmug.com> Cc: Peter Kranz <pkr...@unwiredltd.com> Subject: Re: [AFMUG] 2+0 Co-Polar Sorry which vendor has a2c+? Google fu not worky On Tue, Jan 5, 2021, 1:32 PM Peter Kranz via AF <af@af.afmug.com <mailto:af@af.afmug.com> > wrote: A2C power hit at higher modulations is resolved by the newly released A2C+ hardware. So you can do a 2x80Mhz in the same polarity, single core, without a splitter or other downsides now. Peter Kranz <http://www.unwiredltd.com/> www.UnwiredLtd.com Desk: 510-868-1614 x100 Mobile: 510-207-0000 <mailto:pkr...@unwiredltd.com> pkr...@unwiredltd.com From: AF <af-boun...@af.afmug.com <mailto:af-boun...@af.afmug.com> > On Behalf Of Tim Hardy Sent: Monday, January 04, 2021 12:21 PM To: AnimalFarm Microwave Users Group <af@af.afmug.com <mailto:af@af.afmug.com> > Subject: Re: [AFMUG] 2+0 Co-Polar The dual-core WTM-4200 radio only suffers a coupler loss hit. I think you’re referencing the single-core WTM-4100 using Adaptive Dual Carrier (A2C) which has a significant power hit at 1024 QAM and above. On Jan 4, 2021, at 3:01 PM, Mathew Howard <mhoward...@gmail.com <mailto:mhoward...@gmail.com> > wrote: Yeah, you can do 2 x 80mhz channels with a single core on some radios, but there are some limitations. Depending on the radio, my understanding is that they have to either be adjacent, or very near each other (definitely within the same sub-band). It seems to me that some radios can even do two different sizes of channels (like 1 80mhz + 1 40mhz), but I could be remembering that wrong. If I understand it right, the Aviat radios have a significant tx power hit when you activate that feature, which probably makes it unusable in a lot of cases. We're doing that on a Bridgewave 11ghz link (using 4x 80mhz on a dual core radio), and there's it works fine, with only a minor performance hit on those radios. SIAE does have that feature as well, but I don't remember if there was a significant performance hit or not... I think they may have been the ones that could use two different sizes of channels. On Mon, Jan 4, 2021 at 1:51 PM Ken Hohhof <af...@kwisp.com <mailto:af...@kwisp.com> > wrote: Probably, LinkPlanner is pretty smart. I assume you don't want to use 2 antennas. There are some licensed radios now that I think can do 2 x 80 MHz channels in a single core, like from Aviat or SIAE maybe, I don't know if this gets around the splitter cost and performance issues. I may have that feature completely wrong, I haven't looked into it. There could also be a performance hit by using the same xmt power amp for 160 MHz. I also haven't checked out the full feature set of the new PTP850C, the only thing I know it has is SFP+. ---- Original Message ---- From: "Adam Moffett" <dmmoff...@gmail.com <mailto:dmmoff...@gmail.com> > Sent: 1/4/2021 1:30:45 PM To: af@af.afmug.com <mailto:af@af.afmug.com> Subject: Re: [AFMUG] 2+0 Co-Polar Ok yeah, the Link Planner BOM shows some splitters. I wonder if Link Planner already accounted for the additional losses when I selected "Co Polar" on the dropdown. On 1/4/2021 2:25 PM, Ken Hohhof wrote: > I seem to remember that different channel different polarization is the best, > if your radio manufacturer charges for an XPIC license key. Next best is > XPIC. And that the problem with different channel same polarization is you > need a splitter which costs several dB of system gain. But that's from > memory, and mine is not so reliable. > > ---- Original Message ---- > From: "Adam Moffett" <dmmoff...@gmail.com <mailto:dmmoff...@gmail.com> > > Sent: 1/4/2021 1:16:26 PM > To: "AnimalFarm Microwave Users Group" <af@af.afmug.com > <mailto:af@af.afmug.com> > > Subject: [AFMUG] 2+0 Co-Polar > > I'm looking at a path where the coordinator can get me two 50mhz XPIC > channels, or two 80mhz H-Pol channels. > > I've never installed co-polar. Do you need a lot of extra junk to make > that work? > > > -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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