The Lanbowan antennas are interesting -- their specs are exactly what I'm looking for (especially the panel and the solid dish -- grids do NOT work in ice territory). But it's an unknown Chinese vendor with no obvious US distribution. This might not fly with the network owners (US state government). Also there's no price listed, but I suspect it's very reasonable.
Eric, I'm asking very precise questions for a reason, and this is not about 900 MHz. The point of 2.4 GHz is to avoid needing to put as many users on TVWS, which blasts through trees even better than 900. I'm trying to determine if PMP 450 is worth using on 2.4, vs. sticking to plain old Ubiquiti (no sync, ugh) or ePMP. Every dB counts, and I'm not sure how many dB I gain by using the superior PMP 450 radios. The target area I'm looking at is essentially the northern Appalachians, steep New England woodland. We have some Ubiquiti 2.4 working in a trial, but not on the hardest paths, and it does bog down (no surprise) shooting straight through a spruce forest, though it does a lot better than 5 GHz in such cases.
The Ubiquiti slant-pol dishes are nice but I wish they had a smaller one for the less-difficult paths. There's a huge gap between the 2' dish and the PMP integrated panelette.
Hence I'm still open to other suggestions.