Hi  @Byteguy 

Thanks for posting here.

DISCONNECTED

The connected device has lost connection with the controller for more than 5 minutes

Based on your description, this appears to be an unstable connection between the AP and controller. The lack of disconnection notifications might be because you haven't enabled the corresponding option. You can check this setting on the following page(scroll down)

Since network connectivity isn't affected, you could uncheck the online status notifications.

However, I recommend replacing either the controller's Ethernet cable or the EAP's cable - this kind of issue is typically caused by cabling problems.

Hi  @Byteguy 

Thanks for the feedback. It make sense.

   - The boat may have been equipped with **high-power radio devices** (such as radar, satellite communications, AIS, VHF radios, etc.), which emit strong electromagnetic waves when in operation.  
   - If these devices operate on frequencies overlapping with the 2.4GHz or 5GHz bands used by Wi-Fi access points (APs)—or generate harmonic/sideband interference—they can cause Wi-Fi instability, packet loss, or high latency.  
   - Examples:  
     - Radar (especially older pulse radar systems) can produce interference near 2.4GHz.  
     - Poor shielding on marine electronics may lead to electromagnetic leakage.  

Why Were Only Two APs Affected?  
   - Location: The affected APs might have been positioned closer to the boat’s mooring spot or had a direct line of sight to its antennas.  
   - Channel Overlap: If these APs were using Wi-Fi channels overlapping with the interfering frequencies (e.g., Channels 1-11 in 2.4GHz), while others used 5GHz or different channels, they could avoid interference.