5.8Ghz 42.31km 2 Leg NStreme Backhaul

RouterOS Wireless Networking
1

Hello group…

I have been forced to run a backhaul from the nearest incorporated city for reliable and abundant bandwidth.
My intention is to secure a 12-20MB fiber business grade connection from Time Warner Cable.

I would like to invite anybodies input as to which equipment would work best in addition to input regarding the physical deployment such as antenna polarity, vertical vs horizontal antenna separation, elemental impediments, circular vs linear polarity OR virtually any information regarding a successful Nstreme system that someone has already deployed that would be so kind as to share in this post their findings??

Equipment
MikroTik RB532-4A 64MB RAM
Ubiquiti XR-5
PacWireless 3’ 32.5db parabolics
PacWireless 24vdc power supplys
Die Cast Hinged Outdoor Enclosures (metal)
LMR-400

About the Backhaul Link Path:
The first leg of the backhaul is at our NOC the altitude is 4140’ asl…
The second leg of the backhaul is 3605’ asl and is our only midpoint of the entire backhaul…
The third and final leg of the backhaul is 1057’ asl… (this location will be the bandwidth drop location)

Path Distance:
NOC to Midpoint: 9.61km
Midpoint to SOURCE: 32.7km
Total Path Distance: 42.31km

ALL P2P paths are perfectly un-ubstructed LOS.

Regarding the physical aspects of the deployment:

What is the best method of antenna separation?
Vertical 10’ OR Horizontal 10’???

Each end-point would utilize 1 RB532 using the NStreme protocol with 2 Ubiquiti XR5’s.
I am trying to keep total LMR400 length for each antenna down to 2’ or less.

NOC
TX POL: VPOL 5210Mhz (5Ghz Turbo)
RX POL: HPOL 5800Mhz (5Ghz Turbo)

The midpoint would basically be double the end-points listed above regarding hardware.
2 RB532’s using the NStreme protocol each RB using 2 Ubiquiti XR5’s.

TX/RX Pair from NOC to mid-point
RX POL: VPOL 5210Mhz (5Ghz Turbo)
TX POL: HPOL 5800Mhz (5Ghz Turbo)

**Midpoint antennas would be separated vertically? OR horizontally? by 10’ and back-to-back separation would be 3’ min.

Endpoint antennas would be separated vertically? OR horizontally? by 10’**

TX/RX Pair from mid-point to last leg SOURCE.
RX POL: HPOL 5250Mhz (5Ghz Turbo)
TX POL: VPOL 5760Mhz (5Ghz Turbo)

TX/RX Pair from SOURCE to mid-point
RX POL: HPOL 5250Mhz (5Ghz Turbo)
TX POL: VPOL 5760Mhz (5Ghz Turbo)

I am curious of the use of circular polarity and if it’s acceptable for use in the US and possibly an antenna manufacturer suggestion?
Using RHCP and LHCP seems to me that you would be protected from some level of interference beings most operators are using linear polarity

This is just preliminary, I am definately looking for suggestions, I’m sure there are pitfalls to what I have defined so far and it is by no means a complete definition of the entire system.

I’m sure this is trivial but I intend on using WPA2 encryption as I do with my client devices presently, I’m just really wanting to make sure that WPA2 and Nstreme play well together.

Thank you

2

WOW!
Thank you so much for the incite.

Yes, I actually would like to utilize Nstreme2 on this link…

With respect to the use of RIC/522’s on the 9km link.
It is my understanding that I would utilize 4 of these total for this leg exclusively for Nstreme2 which would have 2 RIC/522’s at each end-point of this segment of the entire link, is this on the right path of thinking?

You could, as we have done in places, drill and fit an N-Type pigtail to the RIC/522, stick your other XR card in the second slot and run a bit of LMR400 back to the dish for the 32k link. Keeps to one router and the RIC removes the need for another “box” too.

Ahhh, so I don’t necessarily have to use 2 routers per link at mid-points then???
Rather than 8 routers and 16 XR5’s, with your suggestions I would utilize 4 RIC/522’s and 2 CM9’s, 2 XR5, 4 3’ 32.5db parabolics ?


So you would suggest that I use the PW 3’ 32.5db parabolics on the 32k link ?

On my recieve side MINIPCI’s would you think it best to utilize an SR5 or even something less robust such as the WisTron CM9?

Is there any chance you have somewhat of a diagram you would be willing to share with me reflecting your Nstreme2 link?



Thank you for your input.
Should you have any other input please share it at your convenience..