Uniquiti U6 Mesh 99% utilisation on 2.4Ghz

Bluecube

Bluecube

Bluecube

Soldato
Joined
20 Feb 2011
Posts
4,333
Last night my WiFi network was absolutely fine. All my devices were happily connecting to 2.4Ghz and 5Ghz networks as they needed. This morning all the 2.4Ghz devices have been kicked off and can’t reconnect. Looking at the channel usage, the 2.4Ghz spectrum is completely utilised with 99% interference.

Nothing has changed overnight so I’m left with the question - why has this happened? And is there anything I can do to fix it?
 
Use a WiFi analyzer app on the phone to see if maybe a neighbour has set up a noisy WiFi network. Another possible issue is if an electrical device is leaking interferences too, microwaves for example also uses the 2.4GHz spectrum and can affect WiFi.
 
The RF is a public space :cry:

Look for data interference if not seen then it will be spectrum use and you would need a spectrum adapter to locate it if local to your house!
 
Do you have any devices that are 2.4GHz-only? Turn 2.4 off on your main SSID and make a new one for 2.4GHz devices.
 
You can do this analyisis in your unifi console. It can show you all the signals and the strength. If you have more than one unifi AP you can do basic triangulation
 
Strange one this. As I mentioned in my original post, nothing had changed on the set up and the issue started overnight. I moved the U6 to another part of my house, started it up and the problem went away - the 2.4Ghz devices connected as expected.

There are two possible causes of interference- a zigbee co-ordinator, and my smart electricity meter. However, as I say there were no problems previously so goodness knows what the actual cause is.

Thanks all for the help and advice
 
Last edited:
Bluecube said:
Strange one this. As I mentioned in my original post, nothing had changed on the set up and the issue started overnight. I moved the U6 to another part of my house, started it up and the problem went away - the 2.4Ghz devices connected as expected.

There are two possible causes of interference- a zigbee co-ordinator, and my smart electricity meter. However, as I say there were no problems previously so goodness knows what the actual cause is.

Thanks all for the help and advice
Click to expand...
your neighbours ?
 
One issue with environment scans and WiFi analyzer apps is they only show WiFi networks, and not anything else. Seeing as it still works in a new location, I suspect something around the old spot something may have gone faulty and is leaking out into the 2.4GHz spectrum. Might even be faulty equipment from the neighbour's if the old spot is near them.
 
Orcvader said:
One issue with environment scans and WiFi analyzer apps is they only show WiFi networks, and not anything else. Seeing as it still works in a new location, I suspect something around the old spot something may have gone faulty and is leaking out into the 2.4GHz spectrum. Might even be faulty equipment from the neighbour's if the old spot is near them.
Click to expand...
Definitely nothing to do with my neighbour's setups which are just basic ISP routers and are sufficiently far away not to cause any bother.

As I mentioned earlier the only devices that operate on the 2.4Ghz spectrum would be the two Zigbee devices (zigbee co-ordinator and zigbee smart meter) which were close to the U6. I've a suspicion the smart meter may be the culprit but how to prove that is another matter as that's one thing I can't turn off!
 
Bluecube said:
Definitely nothing to do with my neighbour's setups which are just basic ISP routers and are sufficiently far away not to cause any bother.

As I mentioned earlier the only devices that operate on the 2.4Ghz spectrum would be the two Zigbee devices (zigbee co-ordinator and zigbee smart meter) which were close to the U6. I've a suspicion the smart meter may be the culprit but how to prove that is another matter as that's one thing I can't turn off!
Click to expand...
Well one dirty method would be to wrap the entire thing in aluminium foil... sorta like a makeshift faraday cage.
 
Bluecube said:
Definitely nothing to do with my neighbour's setups which are just basic ISP routers and are sufficiently far away not to cause any bother.

As I mentioned earlier the only devices that operate on the 2.4Ghz spectrum would be the two Zigbee devices (zigbee co-ordinator and zigbee smart meter) which were close to the U6. I've a suspicion the smart meter may be the culprit but how to prove that is another matter as that's one thing I can't turn off!
Click to expand...
It doesn't have to be your neighbours 'setups' It can be anything that emits RF. Which is quite a lot of things these days. it use to be cordless phones and microwaves, but that amount of smart tech in home these days it could be allsorts polluting your RF space.
 
whitecrook said:
It doesn't have to be your neighbours 'setups' It can be anything that emits RF. Which is quite a lot of things these days. it use to be cordless phones and microwaves, but that amount of smart tech in home these days it could be allsorts polluting your RF space.
Click to expand...
True but my nearest neighbour is about thirty yards away. It would have to be seriously bad issue (and also very targeted) with a device to completely pollute my 2.4Ghz spectrum. The access point I have outside is perfectly fine and before you ask, it's on a different channel from my U6
 
Bluecube said:
True but my nearest neighbour is about thirty yards away. It would have to be seriously bad issue (and also very targeted) with a device to completely pollute my 2.4Ghz spectrum. The access point I have outside is perfectly fine and before you ask, it's on a different channel from my U6
Click to expand...
go into your unifi console and look at the wireless spectrum analyser .Your AP acts as a monitor to see the wireless . You should be able to see what the issue is.

Under 'Radios' you can check Environment from the drop down.
 
Last edited:
whitecrook said:
go into your unifi console and look at the wireless spectrum analyser .Your AP acts as a monitor to see the wireless . You should be able to see what the issue is.

Under 'Radios' you can check Environment from the drop down.
Click to expand...
Nothing of note and certainly nothing near the channel I use. I was aware of all this info that was available to me (but thanks for suggesting) which is why I posted my query as I’d reached the limits of my intellect. I think it’s going to be put under the heading “One of these things” and be left at that
 
You must log in or register to reply here.
Back
Top Bottom