A few days ago I noticed that the 5GHz SSID was missing when I tried connecting from my laptop. My colleagues mentioned it too (so it's not my laptops issue)
I think (although I'm not sure) it went missing after updating 7.22.2 to 7.22.3. ("correlation is not causation")
I couldn't figure out what could cause it.
I did a "Reset Configuration". I tried upgrading the RouterBoard fw version to the same.
Today I updated to the new 7.23, and did a "Reset Configuration" again.
When trying to run "Scan" or "Freq usage" nothing shows up. Could this be an antenna issue?
According to WinBox Tx power is 16mA
I wanted to write the country and mac in angled brackets with a placeholder, but that was removed from the post even though it was a quote. So I added a generic MAC and a EU country.
I reset the router again, so it should be at its default configuration at the moment of writing.
Default packages (routeros and wifi-qcom installed)
I only did the following:
set the country
set to skip all DFS channels
set some SSID
set deprioritize-unni-3-4
set the channel to 20MHz only
> /interface wifi export
# 2026-06-01 19:48:07 by RouterOS 7.23
# software id = RAND-OM01
#
# model = cAPGi-5HaxD2HaxD
# serial number = SOMETHING
/interface wifi
set [ find default-name=wifi1 ] channel.band=5ghz-ax .deprioritize-unii-3-4=yes .skip-dfs-channels=all .width=20mhz configuration.country=Austria .mode=ap .ssid=MikroTik-50ABCD disabled=no \
security.authentication-types=wpa2-psk,wpa3-psk .ft=yes .ft-over-ds=yes
set [ find default-name=wifi2 ] channel.band=2ghz-ax .deprioritize-unii-3-4=yes .skip-dfs-channels=all .width=20/40mhz configuration.country=Austria .mode=ap .ssid=MikroTik-24ABCD disabled=no \
security.authentication-types=wpa2-psk,wpa3-psk .ft=yes .ft-over-ds=yes
From the monitoring output, 5 GHz is on channel 44 (5220) and is running at 16 dBm TX power.
Scanning shows only the external AP's frequency usage, not your own. From your output for the 5GHz device, do not "see" any external AP in the neighbour.
I meant to say, that when scanning, I guess it's in monitoring mode, so it shouldn't matter if DFS is enabled or not, because it is not going to interfere... or is this assumption wrong? No 5 GHz AP-s appear while scanning, though my phone for example detects other hotspots.
Anyway. I disabled DFS channels and it does not make a difference.
The AP does not detect other APs when scanning, and the AP is not detected by clients.
And this is true - your scan shows that you are checking the DFS channels.
If we assume the distance between your cAP and the phone is less than 10cm, it is interesting.
When you permanently disable DFS channels, you limit the possible channel utilisation by cAP. The same applies to disabling the UNII 3 and 4 bands.
Please see what channels your cAP can use:
/interface wifi monitor [find]
Also, check what happens when you remove/change the channel width.
If you are using Linux, please provide the output from your scan:
iwlist <linux_device> scan | egrep -i "Cell|Channel|Frequency|ESSID|Quality" | sed -r 's/^ {1,}Cell/Cell/;s/^ {20}/\t\t\t/' | sed -r ':a;N;/\nCell/!s/\n//;ta;P;D'
And don't forget to change the <linux_device> to the correct value
The 5 GHz networks only (addresses and SSID-s altered) (my laptop is/was next to the AP at the time, I did a frequency scan on the AP too, there were no results)
I have the same issue. I've been running four APs on my cAP AX for years, two at 5GHz and two at 2GHz. Suddenly earlier today, both 5GHz APs disappeared. From what I can tell, all devices in the house lost access simultaneously. Chromebook, plus a variety of iPhone, iPad, Macbooks.
I hadn't touched the AP or router for weeks or longer (this is my home setup). The cAP was at 7.21.x and the router at 7.22.x. Both are now fully updated to 7.23, that didn't help.
Channel used (5885 MHz) is the highest frequency U-NII-4 ... any most of not-so-new devices simply don't support it. Manually set frequency in lower (U-NII-1 or U-NII-2) range (no higher than 5720MHz).
It is possible that 5GHz radio of your device is damaged.
If state is "running", frequency used is supported by stations (your smart phones) and yet stations don't detect it at all, then it is possible that Tx power amplifier is damaged.
If you run frequency scan on your AP and it doesn't detect any of adjacent APs (transmitting on 5GHz band), then it is possible that receiver is damaged.
Both can get damaged if radio is transmitting without proper antenna load attached ... open line means reflection of Tx power (into receiver) and it can also mean resonance inside RF conductors (between power amplifier and open end) which could cause too high output current from power amplifier (read: virtual short circuit).