Good day all. 
We are looking to set up a 12,7Km P2P link and I was just wondering if the MikroTik Light Head Grid 24.5dBi Dual Chain (RB-LHG5) would suit our purposes. Or are there any better cheaper products that will cover the 12,7Km distance.
Better and cheaper? Definitely not. Only better…
This is a pretty long link for this unit. Success will depend on tower height, intervening geography, obstructions, and interference. Also whether you have a hard minimum bandwidth requirement or not.
I love these units for point-to-point use and also as inexpensive CPEs, but I have not tried to push a pair over that distance. The terrain in my area would prevent that anyway.
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We have some LHG’s connected 20Km apart, and they work very good for the price of the units.
If you need a lot of data over the link then you can take a look at the DynaDish