Archer C7 Wifi Turned Itself Off?

Thanks for the replies.

I only meant normal, I guess, in the context that some people reported this happening in this thread, so I wasn't sure if it is to be randomly expected on a C7 or not, etc.

I'm not sure what DFS channels are.
And how do I find my config files again? I can ssh in, I just forget where they are.

Not sure about radar around here, but I suppose it's possible. Like military radar or am I just being a newb and you mean something else related to wifi?