How to debug poor WiFi connections?

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BubbaMoe
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PostPosted: Thu Jul 28, 2022 20:00    Post subject: Reply with quote
the-joker wrote:
@BubbaMoe

A microwave releases its electromagnetic radiation directionally towards the inside of the shielded area where you place the food.
A regular modern microwave will have RFI/EMI shielding, so unless the shielding is failing, little chance unless the router and clients are right next to it remember this is directional aimed at the inner shielded chamber and the RF source outside chamber is also shielded.

Bluetooth and other 2.4Ghz household devices, could however interfere far easier. Broadcom has some BT coexistence mode, no idea how this works exactly but it works, Atheros however I dont think it has this functionality.

I use a WiFi analyzer on my mobile to check which channels however are less crowded and have setup my router accordingly, so its quite interference free setup. Definitely recommend, especially in interference rich environments.
Also taking in consideration placement of the router depending what the buildings walls are made of.


Tell that to both my upstairs and downstairs microwaves that completely stall all communication on channel 5 of the 2.4ghz band anytime they are in operation.
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MLandi
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PostPosted: Thu Jul 28, 2022 21:29    Post subject: Reply with quote
BubbaMoe wrote:
Tell that to both my upstairs and downstairs microwaves that completely stall all communication on channel 5 of the 2.4ghz band anytime they are in operation.


Serious question, are you sure your microwaves are plugged into properly wired outlets? What you describe could be caused by ungrounded outlets. There is a reason why microwave ovens have three-prong plugs. If the ground is not connected, you can have energy leaking, causing your WiFi issue.

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kernel-panic69
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PostPosted: Thu Jul 28, 2022 21:32    Post subject: Reply with quote
Plus the fact that channel 5 is not an ideal or optimal channel to use for the 2.4GHz band, regardless of regulatory domain. Doesn't mean it can't be used if 20Hz channel width is used and there is congestion on all optimal channels in the neighborhood, but it is not ideal.
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strange
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PostPosted: Thu Jul 28, 2022 21:53    Post subject: Reply with quote
Here you go...

https://hackaday.com/2018/09/26/building-a-hardware-store-faraday-cage/

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MLandi
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PostPosted: Thu Jul 28, 2022 22:08    Post subject: Reply with quote
strange wrote:
Here you go...

https://hackaday.com/2018/09/26/building-a-hardware-store-faraday-cage/


Yep, that would solve the issue. Laughing

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BubbaMoe
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PostPosted: Thu Jul 28, 2022 22:32    Post subject: Reply with quote
MLandi wrote:
BubbaMoe wrote:
Tell that to both my upstairs and downstairs microwaves that completely stall all communication on channel 5 of the 2.4ghz band anytime they are in operation.


Serious question, are you sure your microwaves are plugged into properly wired outlets? What you describe could be caused by ungrounded outlets. There is a reason why microwave ovens have three-prong plugs. If the ground is not connected, you can have energy leaking, causing your WiFi issue.


Yeah of course, same thing happened in my old place and there are countless posts online about microwaves causing 2.4ghz interference it's not exactly an uncommon occurrence.
strange
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PostPosted: Fri Jul 29, 2022 1:56    Post subject: Reply with quote
Cordless phones also operate on the 2.4Ghz bandwidth. I think that some baby monitors do too. Heck, it could be sun spots too. Rolling Eyes
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the-joker
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PostPosted: Fri Jul 29, 2022 9:01    Post subject: Reply with quote
BubbaMoe wrote:
MLandi wrote:
BubbaMoe wrote:
Tell that to both my upstairs and downstairs microwaves that completely stall all communication on channel 5 of the 2.4ghz band anytime they are in operation.


Serious question, are you sure your microwaves are plugged into properly wired outlets? What you describe could be caused by ungrounded outlets. There is a reason why microwave ovens have three-prong plugs. If the ground is not connected, you can have energy leaking, causing your WiFi issue.


Yeah of course, same thing happened in my old place and there are countless posts online about microwaves causing 2.4ghz interference it's not exactly an uncommon occurrence.


Its not uncommon or unheard of, but is possible to ameliorate the situation. by positioning devices away from any source of interference or facing the microwaves into a direction that directly towards the devices (since microwave is directional). If this isn't possible, and obviously its not practical to shove the microwaves into a Faraday cage, but there are some Faraday fabrics which reduce the leaked radiation, also not so practical.

You can experiment with different positions where microwaves are concerned.

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ho1Aetoo
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PostPosted: Fri Jul 29, 2022 9:23    Post subject: Reply with quote
I had a microwave on the terrace at the beginning of the year to sterilize soil.
With 2 meters distance to the parabolic antenna

Whenever the magnetron was started it disturbed the satellite reception.

Triple shielded cables.

Mr. Green

Is fortunately not my microwave oven - which was only borrowed from the neighbor.

Just wanted to say, interference can be quite real.
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