Homeassistant Yellow & Fritz!Box WLAN 5Ghz Issues!

Hardware
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1

Hi all,
since I installed my HA Yellow I recognized problems in my Home WLAN.
I am running a FritzBox 7590 with several Mesh Repeater (3000,6000,1750).

WLAN devices lost their connection.
After looking into the Fritz!Box LogFiles, I saw that the repeater next to the Yellow had problems with the 5GHz connection.

The Log says:
" 5G for a minute (channel 100, frequency 5500 Ghz) not usable because of a privileged RADAR"
sometimes it 1-10 minutes.

this makes me nervous.

To validate the problem, i changes the location of the Yellow to another room.
Same problem with the Repater in the room.

Does anybody having similar issues?

2

You need to play with the WiFi channels settings inside your FritzBox. Find a 5GHz channel, which is not affected by this. The RADAR thing is a function inside FritzBox.

Usually setting a fixed channel not higher than 48 helps. Channels around 100 are often affected.

What is it about? See here:

3

solved.
the Fritz!box was broken.