I'd have to climb up on the roof to check my antenna, but on the back of it they're 4 or 5 LEDs which act like a cell phone signal strength indicator.

It took about 2 minutes to align my antenna, and I'm getting about 8ms of latency through it. I'm not on the longest run, I'm about 4 miles away, but these same antennas are going about 17 miles I think.

They also do hardware channel hopping. I think they use one channel for upstream, another for downstream, and they rotate if any noise/interference is detected.

I actually need to weld up a nicer mount, as one of the ice storms this winter caused it to drop from 95% signal strength to about 3%. Maybe I'll do that this week while the weather is still nice. Nothing like climbing around on an icy roof just for internet access