The DFS checks exist to prevent your radio from interfering with the weather radar. You’re only allowed to own a radio that could cause such interference because it has those checks.

Here’s an example of what it can look like on the weather radar side: https://www.reddit.com/r/techsupportgore/comments/lnxdji/whe...

Is this from a consumer WiFi or from some bigger antenna?

This is why spectrum in many countries requires users and/or devices to be licensed.