hAP ax3 - 5GHz channel not discoverable from MacBook Pro and Pixel 4a

[Rox169]

Hi,

I have similar problem, When I do not chose country the radio power is at maximum I have best wifi 6 performace but the WIFI 5,4Ghz channel is too high and my TV Samsung 3 years old do not connect to this channel. When I chose my country the channel is lower and my TV can connec to 5,4Ghz

[egal667]

… if the channel width is 80 MHz and the center freq is 5500 it means it starts at 5460 which is outside the range.

Nope. Mikrotik shows frequency which is center frequency of Control channel. So clearly control channel was ftom 5490MHz to 5510MHz. The rest is a guess, but if channel layout was Ceee, then the 80MHz channel would span between 5490MHz and 5570MHz … if channel layout was eeeC, then 80MHz channel would span 5430-5510MHz. But then it might opt for 40MHz only channel spanning either 5470-5510MHz or 5490-5530MHz. Or something else.

But then wifiwave2 could contain country limits which are actually invalid (but we can’t check them because traditional command showing them doesn’t work since 7.6). And if limits from legacy driver are correct (and other devices obey them), then it’s only logical that devices ignored AP whike it was using illegal frequency channels.

Thank you for the detailed explanation! I remembered now that the Pixel 4a was purchased in the US, so it should not be limited to Israeli frequencies, and still it could not discover the router when it chose the 5500 channel.

[bpwl]

was purchased in the US, so it should not be limited to Israeli frequencies

Some MT models have specific US executions. (Chateau, SXT,LHG) mostly when mobile channels are involved. It is normally clearly documented if there is a US specific execution.
Like: https://mikrotik.com/product/rbdisc_5nd (check the freq ranges of the US version !!)
http://forum.mikrotik.com/t/change-a-mikrotik-usa-version-to-international/134154/1
Region limitation for wifi frequencies, power, DFS, is set when the country or region is set in the config.

If in one physical region, you fill in another region, there might be problems with client devices that did set the correct or even yet another region, as only the common frequencies are usable.
With the region info as it is seen in MT, an Israeli client (set to region Israel) device will not detect wifi on 5500MHz+ channels.
(My DJI drone uses it’s GPS info to set the correct region. )

[mkx]

The LG G4 I mentiobed in post #15 above got info about rough location from mobile network (MCC says it all).

So it doesn’t really matter where devicecwas purchased (unless it’s crippled to country speciffics), if it’s truly “world” device it’ll adjust to country regulations according to location information (and there are various location information sources).

[egal667]

The LG G4 I mentiobed in post #15 above got info about rough location from mobile network (MCC says it all).

So it doesn’t really matter where devicecwas purchased (unless it’s crippled to country speciffics), if it’s truly “world” device it’ll adjust to country regulations according to location information (and there are various location information sources).

Interesting point, you’re right it can detect the location by SIM operator, GPS signal and more. Thanks!

[mkx]

… it can detect the location by SIM operator …

SIM operator doesn’t necessarily give current location (think roaming). So it’s actually MCC of currenly used network (can even be the “emergency calls only” half-registered network, phone will be able to read MCC anyway).