Fritz!Box repeater and other devices: “Radar detection enabled. At the moment no wireless LAN connection (5 GHz) is possible; please wait.”
Posted by jpluimers on 2021/05/31
If any of your Fritz!Box devices under “Wireless” -> “Radio Channel” -> “5-GHz band” the indicates “Radar detection enabled. At the moment no wireless LAN connection (5 GHz) is possible; please wait.” – Google Search:
- Click on the “Refresh Auto Channel” button
- Wait until it has chosen a new 5Ghz channel
- Verify you can connect over 5Ghz
- If you still cannot connect, retry steps 1…3 once.
I had this only happen on 1750E repeaters so far, but others seem to have had it on other Fritz!Box devices as well.
In the Netherlands, potentially affected channels seem to be 52 through 140.
Related:
- [WayBack] List of WLAN channels: 5 GHz (802.11a/h/j/n/ac/ax) – Wikipedia
- [WayBack] WiFi 5GHz band and wide channels – Metis.fi
- WayBack – Wi-Fi 5Ghz kanalen | Lantech now at [WayBack] Blog | De voor- en nadelen van Wi-Fi 5 GHz frequentiebanden | Lantech
- [WayBack] Statusmelding “5 GHz band cannot be used for […] because of check for higher-priority users (e.g. RADAR) on the selected channel ([…] GHz frequency)” | FRITZ!WLAN Repeater 1750E | AVM Nederland
- [WayBack] Forum: FRITZ!Box 7581 problemen – XS4ALL Gebruikers Groep – Experts helpen klanten
–jeroen
The Wiert Corner - irregular stream of stuff 
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