This really sounds like something you should talk to cambium about. They probably have some thoughts and advice on how to best make it work.
On Fri, May 29, 2020, 10:39 AM Colin Stanners <cstann...@gmail.com> wrote: > We have a tower site with customers across a lake, a few miles from the > tower. On 2.4Ghz PMP100 and 3.65Ghz PMP450 platforms, the occasional > thermal ducting / reflection across the lake will cause signal loss and > slowdowns / disconnections in rare and non-uniform cases. > > I had been looking at spatial diversity options at the tower end for a > while, but they weren't great. > 1) Separate APs+antennas at different heights (at 3.65Ghz frequency ~50ft > apart?) - reconnections as the SMs switch APs would annoy customers, and > another non-lite PMP450 AP is not cheap for a smaller tower. > 2) A PMP450 3Ghz AP in the middle, with each polarization on a different > antenna, ~50ft apart in height: the signal loss in the longer coax to each > antenna is a big problem and some customers would often lose half speed due > to one polarization being low in their location due to Fresnel zone. > > Now that ePMP3000 has been working well elsewhere on our network, there is > option: > 3) ePMP3000 with 2x antennas, one main at the AP and another diversity > antenna ~35ft lower (~6dB weaker due to loss on the LMR400 coax etc). > Avoids all major problems. We checked in the shop and the Force 300-25 SM > seems to jump between antennas on AP ports 0+1 and 2+3 quickly and > effortlessly, without affecting traffic. > > This seems like a great option, does anyone see a reason that it wouldn't > work? > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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