Can 19dbi 30 deg sectors PTMP 5.1GHz w/ two XR5 do 15km?

RouterOS Wireless Networking
1

With clear line of sight and no interference in the 5GHz range, we want provide access for three locations. At our main mast (overlooking all ten locations btwn 15-20km away) we’re going to use a 30 deg sector antenna and the ones I’ve seen so far look flimsy and are <20 dBi. Is this layout feasible? What would be the minimum dBi you’d recommend given a 15km PTMP?

Each location pointing up to our main mast will be using two 21.5 dbi grid dishes and two XR5 cards. Per location what would be the realistic throughput? 5Mbps each (sharing 14Mbps?)

I appreciate the feedback. We are going to use MT for sure.

2

Use the mikrotik link calculator to see things for yourself.

http://www.mikrotik.com/test_link.php

3

Thanks for the link. Like I thought, anything <20dBi for this link is unreliable.