Changing WiFi Channel - Prevent Microwave Interference?

Dell / Xps 8930
June 19, 2020 at 09:51:45
Specs: Windows 10, I5-9400
I am having problems with a printer that keeps getting knocked Offline. When that happens I have to cycle the power to get it back Online.

I suspect that my microwave is the issue but the printer only operates on the 2.4 Ghz band so switching to 5 Ghz is not an option. I should note that the printer's control panel does not show that the WiFi is off. It's only when I try to print that I find out about the problem. Win 10 pops up a message saying that the printer is Offline.

I read that setting the WiFi to Channel 1 might help with microwave interference.

When I log into my Router I see this:

Wireless      > 2.4GHz      > Radio
Wireless Status:             Enabled
Channel Bandwidth:           20MHz (the Drop Down offers 20Mhz, 40Mhz, Auto)
Current:                     20MHz
Wireless Channel             11  (the Drop Down offers Auto and 1 through 11)
Current:                     11  ***Interference Level: Acceptable

If I simply use the Channel drop down and change it to Channel 1, will I need to do anything to any devices that are currently using the 2.4 Ghz band? At a minimum it's the printer and my Nest thermostat. Will devices just automatically pick up the change?

Any other advice would be appreciated. Feel free to ask for more details regarding the issue.

Thanks!

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#1
June 19, 2020 at 10:22:32
Just change it at the router - all devices should pick it up. Use 1. 6 or 11 to minimise overlap, see here:
https://www.metageek.com/training/r...

EDIT:
It's a good idea to select a channel that is NOT your nearest neighbor so that their strong signal does not cause interference. This tiny little program will gives the WiFi signal strengths of those around you:
http://www.nirsoft.net/utils/wifi_i...

Always pop back and let us know the outcome - thanks

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#2
June 19, 2020 at 10:34:58
Good advice from Derek - use channel 1, 6 or 11.

I have 2 wifi routers connected via powerline adapters so I get better coverage & to reach my detached garage. I had to experiment to come up with the best combination of channels. I used Acrylic WiFi to help sort things out: https://www.acrylicwifi.com/en/wlan...


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#3
June 19, 2020 at 10:38:40
Thanks Derek.

Maybe I'm doing something wrong, but the WiFiInfoView program doesn't show any networks.

The Full Details Mode screen is completely blank except for the column headings. Any thoughts?

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#4
June 19, 2020 at 11:12:12
WifiInfoView v2.60 works fine for me in Windows 10. IIRC, I got
a list of over 200 signals within the first couple of minutes, and
more were added as vehicles passed by that had WiFi. All from
a fixed position. It seemed to work very fast.

I wonder if it could be used to detect microwave ovens?
I didn't see any provision for listing anything without an SSID.

Everyone in this building of 160 apartments has both a microwave
oven and a WiFi router, which by default is turned on. I might be
the only one who has turned it off.

-- Jeff, in Minneapolis


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#5
June 19, 2020 at 11:37:06
Works better if WiFi is on. My PC is hardwired to the router, so I keep the system's WiFi off.

15 entries, 4 of which are mine. Maybe 5, if that's my Samsung TV. From a signal quality perspective, the next lower numbers below mine are on Channel 6, so I'll try Channel 1 and see what happens.

It might take an hour to know or it might take days. I'll stay in touch.

Thanks!


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#6
June 19, 2020 at 12:24:54
Yeah, those On switches are magic - never looked back since i discovered them.

Always pop back and let us know the outcome - thanks


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#7
June 29, 2020 at 17:42:06
I'm going to have to give the Channel 1 solution a big thumbs up.

It's been over a week and the printer hasn't gone offline once. That's never happened since I moved the router, which caused the printer to act up.

Thanks for the advice.

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#8
July 1, 2020 at 09:06:05
I knew I would jinx it by calling it fixed. I was even going to put that in yesterday's post.

First time I tried to print today I found that the printer was Offline.

I'm considering buying a new printer, something that runs on 5G. I'd love one that could be hardwired to my PC and also accept WiFi from other devices. (My Epson won't do that). Most of my important printing is from the PC so that's my #1 priority.

I'm open for suggestions for printer/copier/scanner, reasonably priced for both the device and ink. I know, wrong forum, except for the dual networking request. ;-)

Thanks again for any assistance.


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#9
July 1, 2020 at 15:38:25
A long shot... I wonder if the actual wifi signal is not the best where the printer is situated, and interference of almost any sort may impinge.

One way to determine this is to use a local wifi extender in the area. I’m thinking of the homeplug system; which allows ethernet over mains wiring – and some (all current?) homeplug vendors also have a wifi plugin module. Devolo (for me the best...) have them but they’re not available in Canada/USA... Such modules pick up the ethernet signal (cia the mains wiring) and radiate it as wifi... The usual brands in Canada/USA do have their versions.

riider alluded to this approach eariier; and may be worth testing?

Perhaps consider getting a couple of homeplug modules - ensuring one is wifi. Connect the router to one adapter/module and put the wifi one adjacent to the printer? If that doesn’t resolve the problem one can always return them?

Chez-moi is homeplugged and I have two wifi adapters as well. One in the kitchen by a window overlooking the garden and that allows wifi coverage the length of my 50ft garden - without which I have only partial coverage there. The other is in a front upper floor room just to be sure the coverage there is OK.

As regards all-in-one kit... The number of models which allow ethernet seems to have declined these last few years. I have a Canon TR8500 – which allows ethernet and wifi (and of course usb); and it is not the most expensive on inks – especially if one uses a reliable equivalent to Canon’s.

And there are ethernet – usb adapters out there (again) which seem to be OK. The South America River company has them for a modest sum; and spec’d for win-10...

Personally I feel too many use colour inkjet printing when a simple mono laser would do most of the time; and mono lasers are quite cheap to buy and run. Keep colour inkjet for when it’s really needed? I have my Canon TR8500 as above – and a ‘95 vintage Epson laser which stil runs fine on my Mac systems (albeit emulating an hp4, as Canon stopped making drivers for the Epson a few years back).

re' 24 versus 5.0Gig wifi... The range of 5Gig is less than that of 2.4; and in some instances even more prone to interference and attenuation (due to the nature/type of walls between suorce and destination (device).


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