Setting up a long distance wireless hotspot

I believe the fine from the FCC would be $5,000 a day.

Evan1 wrote in news: snipped-for-privacy@no-mx.wirelessforums.org:

Legally, the highest gain antenna you can connect to a 1 watt device is

You gave virtually no information about geography, so no answer can be forthcoming.

Without LOS, you don't have a chance. In fact, you need better than LOS; for starters, see

Line of site is essential. An AP running 2 watts on a tewnty foot mast can be easily seen from 800 feet away outside on a walk around laptop, but walk twenty feet into the shadow of a house, and it becomes invisible.

Why do you want a Mikrotik unit? Just set the access point with WPA and keep track of the users. Oh...sorry, you aren't using an access point. Hmmm... That's gonna be a problem.

I'd go with at least TWO *commercial* grade access point, that's at least $300 for starters. Prices have really come down from the $1,000 range in the last two years.

You could as well use couple of consumer grade APs and hope for the best.