I have a Mikrotik HAPax3 router and its WiFi 2GHz interface is not running. When I scan the area with Wifi Analyzer, I don’t see any 2.4GHz signal at all and I can’t to connect to it. Only 5GHz is running. Below is the interface configuration export. /interface wifi security add name=WiFi_Sec aut…

My drive uses an aluminum case, but it's so small that I don't belive it offers adequate protection against interference. The suggested forum posts were very helpful, though. HAP Ax3 no WiFi WiFi Connection Deteriorated Intel's paper also helps to understand how the interference occurs. Follo…

What country is “country”? Or did you edit the value in this post? Do you see anything in the logging? Is the network on the 2.4GHz radio visible in a wifi scanner (i.e. on your laptop or mobile)? Out of curiosity…why a dedicated wifi bridge? And hidden SSID is not like…hidden. Just that you are…

First things first. Can you confirm if the device is not broken: Does the 2.4GHz work at all? (reset and default config, can you see it and connect then). Do you use latest 7.17 SW?

And … what does /log/print have to say about 2.4GHz interface?

Thanks for all the replys. @erlinden , I edited the country value for this post. When I check the logs, I do not see any message related to the WiFi 2G interface at all. Just the system info for the changes I made while trying to figure this out. [diasdm@HAPax3] > log print where message~"wifi_2" …

If you have some attached on the USB remove it and try! I had the same issue when i use some chinese usb hdd cases or flash memory, no radio or can"t connect on it. Mikrotik support said there was a bug with the kernel , but it was still with ROS version 7.8.

Only now I've managed to get back to this matter, and yes, the issue is indeed the USB thumb drive. After removing the drive and rebooting the router, the 2GHz started running again. However, when I insert the drive again, I lose the signal. The drive is a simple Samsung flash drive that I guess i…

You can try a shielded extension cord, or you will need a different USB Drive

It's a USB interference problem. https://www.intel.com/content/www/us/en/content-details/841692/usb-3-0-radio-frequency-interference-impact-on-2-4-ghz-wireless-devices-white-paper.html

See also this recent thread: [image] hAP AX3, No Wifi Wireless Networking After a power down reset, no wifi SSID’s advertised. Sometimes the 2.4 SSID will advertise but client cannot connect. (Unable to connect to this network). The 5G is never seen. Tried e…

Good afternoon, did the foil cap help you?

HAPax3 WiFi 2GHz Interface Not Running

RouterOS Wireless Networking

jaclaz October 12, 2025, 9:12am 10