RB433UAH question

I’m not sure if this is the best place to ask this question.

I’m looking to buy a pair of RB433UAH one with 2 and the other with 3 R52Hn’s.
My questions is, I would like to run a FD (or near FD) link between site 1 and site 2, from what i understand i need 2 radios for a FD(or near) link, will I also need 2 separate antennas, or do they make special antennas for that? (id like to get by as inexpensive as i can and space is limited)

And would it be better to run OSPF, or nstreme-dual?

Hi, my recomendation is to use 2x411ah on each side making 2 links and later “balance” them with 2x450g, one per side. Search the wiki for the ospf configuration for this.