@woozle thanks, that is useful.. it also means I probably shouldn't use the C80 to do what I was going to do and stick with one with 2x2MIMO as my external panels are two inputs on each.

@Kevin_Z the datasheet only specifies it has 4 omni antenna, not which one is which. I need to know, preferably not through experimentation, which is the 2.4/top, 2.4/bottom, 5/top, 5/bottom.

Can anyone tell me which antenna is which on the C80?