5Ghz backhaul options?

Hello,

I am kinda new in the wireless world and even after reading through specs&docs I am still perplexed with possible options for high-speed backhaul links for my ongoing project. Hardware is agreed upon, 433AH routerboard and R52n radio cards, but that’s about it.
I now have to devise few options for fast 5Ghz backhaul point to point links over short distances (up to 2km). I am looking into something a bit more than 802.11a, since the hardware is there, but my supplier seems to have problems with getting MIMO antennas. Can someone help me a bit with this, I would be very much obliged.

I need robust solution, stable links (but the more Mbps the merrier) and would only like to use 1x R52n for such (mandatory requirement!) because I need other 2 radios for other purposes.

  1. MIMO antennas give me ability to use 2x2:2 antenna configuration with my R52n card, these antennas require me to use both mmcx radio card connectors (need to scheme out enclosure, so number of needed connectors is kinda important to me)?
  2. What can I expect with 802.11n standard without MIMO antenna (like using standard panel with just one connector), should I spec MIMO as mandatory for this purpose?
  3. How dual-polarized antennas (MIMO/not MIMO) fit into all this, do I need to use 2 radio cards for such (for each polarization) or you can use single R52n with 2 connectors?
    3.1) If I can use dual-polarized antenna with just 1 radio card, what benefits will that get me opposed to single polatization antenna?
  4. I need standards based solution with minimal problems during future upgrades, is it wise bothering with Nstream (this requires 2 radios, right?) or Nv2, as I see these are proprietary Mikrotik protocols ?
  5. any comments if I possibly overlook something, or further suggestions on solutions, reading materials to look for etc. would be more than welcome

Thanks in advance

P.S.
Basically I don’t wanna end with solution inferior to SXT 5HnD, which seems to use dual polarization and dual chain MIMO antenna (+Nv2 if one wants I guess), just because I messed up on antenna selection.

hi…

this is very depend and to run the 11n, so far the best card i tested is the F52N-pro from dbii, if you place heavy interference, we may can consider the antenna from lanbowan.

since you are new, there is a lot of involvement to setup a stable and perform well link such like..

  1. data surge protection
  2. poe surge protection
  3. antenna mounting area consideration
  4. interference condition

it can be very straight forward also can be more complicated.