2+0 Co-Polarization will add couplers and losses on each end, and I believe that LinkPlanner automatically puts those in when you specify this. With the Aviat WTM, you would be using the WTM-42C (coupler version) which has the coupler losses baked-in to the specs.
> On Jan 4, 2021, at 2:51 PM, Ken Hohhof <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> > Sent: 1/4/2021 1:30:45 PM > To: 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> >> Sent: 1/4/2021 1:16:26 PM >> To: "AnimalFarm Microwave Users Group" <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 > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
