Please help me to choose too, guys.
Due to direct NLOS between S
points we making two
clear LOS wireless links via AP-retranslator
A <---------4.2km--------> S
P <--180m--> D
Two half-links are asymmetrical in distance, but quite in the same direction from AP (may be 7-10 degrees sector).
Now we are using 3 Ubiquity NanoStation2
), giving us 5-8-10Mbit/s -- limited by their poor CPU, anthennas, and affected by noise/interference.
Sometimes later we've made another retranslator-based bridged link, but with 30-40 degrees sector between half-links.
So we've chose pair of Ubiquiti NanoStation M5
(flat sectors) for AP and 350m
Station, but NanoBridge M5
(solid parabolic dish) for 3.4km
Yes, 5GHz now, not 2.4GHz. All radio transmit power and AP direction tuned to get the same Signal Level of either Stations to AP.
Using 40MHz band MIMO2x2 240-270Mbit/s carrier we've got 55-65Mbit/s Full Duplex
by devices' internal test. Not bad, want to reproduce.
Now we plan to upgrade first link's NanoStation2
's to 5GHz band and 802.11n MIMO2x2
But want to use Mikrotik SXT/SEXTANT
now, not Ubiquiti
, because of narrow AP beam (no need in 60-90 degrees sector), and quite cheaper equipment.
Please, help me to choose the right devices, keeping in mind:
1) One half-link is about 10x closer than another (180m
) -- may be use SXT, SXT and SEXTANT
2) Mikrotik RouterOS License Level (3 or 4
) needed to act as AP WDS between two Stations? That's not PtP
as well, but Level 4 is not embedded everywhere...
3) What wireless protocol should we use here -- plain 802.11n, Nstreme or NV2
4) All router features are not mission critical, just fast ethernet bridge. But link stability, wireless fine tuning, good diagnostic tools are welcome.
Thanks in advance.
P.S. Corrected distances using GPS and Google Earth. Things've got even more complex, guys.