Well a country like Belgium is 100% covered by 4 weather radar.
The major problem however is false positive DFS activation, even in your basement. Signal coming from a nearby wAP triggers the DFS detection quite often, even with a 280MHz offset in frequency, as seen with "Snooper".
https://www.wirelessinfo.be/wifi-wetgeving/
In fact, weather radars and other radars operate on the frequency band 5600-5650 MHz. And weather radars transmit a power of 250 Kwatt. (250,000 watts). The radius of these weather radars has a range of 250 Km. Every 10 minutes the weather radar makes one rotation and this signal can be seen from far away.
Not by human eyes, but by our access points that are always scanning for radars. I will show you further on this presentation a radar detection.
There are four weather radars in Belgium, so it would surprise me that an outside point to point link would not detect these signals.
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