It recognized it just fine. Just had to use the channels UBNT said to use.
I could try other antenna's but don't know who makes them. When I did my testing it was in my lab using paper clips. That's what we use for all our tests.
Here is the pdf for the 14 dBi Yagi from M2Inc.
You can see that antenna is designed to drop off quickly above 750 MHz. Another thing that happens as you get away from the design frequency is the radiation pattern of the antenna changes and you loose more energy in the standing wave (return loss increases).
We bought a different antenna from someone, I am not sure who. The boss does the buying, all I do is spec them out.
You may find this parts list from DMS useful, though I don't think they sell small lots.
It is weird. I installed two XR7 radios today in RB433AH boards and RouterOS did not discover either of them.
I'll take them out, clean the contacts and try again tomorrow.