Desert shots over long distances are affected by ducting... Thermal inversion for one....over water we have other issues to contend with as well.... Diversity is one way to overcome predictive issues and some unforeseen fading phenomena... Rain in desert... High winds over water... These all affect radio signals and more frequently attributed to specific wavelength.. Look at legacy telco links... Diversity (spatial and now defunct frequency) was used. Another trick was scatter links but I think those are no longer allowed..
On Nov 1, 2016 8:21 AM, "Faisal Imtiaz" <[email protected]> wrote: > Keep in mind that Rory is in Arizona ! :) > > Faisal Imtiaz > Snappy Internet & Telecom > 7266 SW 48 Street > Miami, FL 33155 > Tel: 305 663 5518 x 232 > > Help-desk: (305)663-5518 Option 2 or Email: [email protected] > > ------------------------------ > > *From: *"Charles Regan" <[email protected]> > *To: *[email protected] > *Sent: *Tuesday, November 1, 2016 9:36:09 AM > *Subject: *Re: [AFMUG] PTP 60 miles 400Mbps > > 11ghz? How stable is that link? Signals? Screenshot? > > > On Tue, Nov 1, 2016 at 10:32 AM, Rory Conaway <[email protected]> > wrote: > >> I have a 50 mile B11 link with 4’ dishes running 400Mbps. When the >> alignment is done, it should hit 480Mbps. >> >> >> >> Rory >> >> >> >> *From:* Af [mailto:[email protected]] *On Behalf Of *Jeremy >> *Sent:* Monday, October 31, 2016 7:11 PM >> *To:* [email protected] >> *Subject:* Re: [AFMUG] PTP 60 miles 400Mbps >> >> >> >> If you are already using AF5X, would this be a possibility?[image: >> Inline image 1] >> >> >> >> On Mon, Oct 31, 2016 at 8:00 PM, Jaime Solorza <[email protected]> >> wrote: >> >> We did a link from across the bay in Corpus Cristi with Tsunami 5Ghz >> radios using 4 ft. Dishes using horizontal polarity. 5 story building on >> one side and 120 ft. Tower at other side. These were 10mbps radios and >> we got almost 100% across. All the other links on same roof and other >> water as well used vertical polarity and had ducting issues. With MIMO >> and all kinds of polarity options I am sure you can find a solution. >> Antenna diversity must be engineered for path and conditions. Where are >> you trying to shoot from? >> >> >> >> On Oct 31, 2016 6:39 PM, "Cassidy B. Larson" <[email protected]> wrote: >> >> Did SAF try 6GHz? Or did they only try 5GHz? >> >> Seems a 2+0 at 6 would probably work at that distance.. although seawater >> is a factor I dunno about >> >> >> On Oct 31, 2016, at 18:32, Charles Regan <[email protected]> wrote: >> >> Well here's SAF response: >> *My link planning team confirmed SAF does not have a viable 5GHz radio >> that can achieve your objective for this path.* >> >> Trango: >> *rough calculation suggests that even using space diversity will yield a >> 3 - 4 'nines' link (predicted reliability) at around 200Mbps FDX. The use >> of space diversity will also add considerably to the cost (a complete link >> might be upwards of $50K).* >> >> I'll ask SIAE... >> >> >> >> On Oct 31, 2016 9:19 PM, "Eric Kuhnke" <[email protected]> wrote: >> >> 20k? >> >> SIAE AlfoPlus2 6 GHz 1024QAM dual polarity link. Or two pairs of >> alfoplus1 1024qam (single polarity) radios running in parallel, opposite >> polarities, equal OSPF cost between routers. >> >> Or Trango's 1024QAM 6GHz radios. >> >> Why not SAF? I thought there was a 6 GHz version of the Integra now. >> >> >> >> >> >> >> >> On Mon, Oct 31, 2016 at 5:10 PM, Charles Regan <[email protected]> >> wrote: >> >> Hello everyone, >> >> What would you guys use for a 60 miles PTP link? 400Mbps. Oh and it's >> over seawater... 20k$ budget. >> >> SAF, Trango both said sorry, can't do. >> Mimosa B5C with space diversity and 3k$ maybe. >> >> We do have a working AF5x with a 34dbi dish doing 150Mbps aggregate. >> The link gets bad sometimes because of ducting/reflection. >> >> How could I use two parabolics dish on different polarity with the AF5x >> for space diversity? Splitter? >> >> Should a B5C perform better or worse ? >> >> Charles >> >> >> >> >> > >
