#1 By: Jason Fitzpatrick, September 5th, 2013 16:00
Originally published at: http://www.howtogeek.com/171869/why-does-running-my-microwave-kill-my-wi-fi-connectivity/
There are a variety of household devices and electronics that can interfere with your Wi-Fi signal, but most don’t have the ability to do so quick so spectacularly as a microwave oven. Read on as we explore how a microwave can wreak havoc on your wireless network.
#2 By: Lady Fitzgerald, September 5th, 2013 20:07
Some cordless phones can also interfere with Wi-Fi networks, depending on the band they use, and microwaves can also interfere with the same cordless phones.
#3 By: D3343, September 6th, 2013 17:16
Hi! I'd love some more specific info. My wife has to connect with her work network and sync medical files, and the microwave will wipe out the sync. I have a brand new modem/router, which is currently set to "802.11 b or 902.11g or 802.11 n Mode" (and there are some other choices). Is the a way to set a laptop to use only a 5 GHz connection? Or is there a way to set to wireless router to use only a 5 GHz channel? The choices for a channel are 1-11 and, as far as I can see, all those are 2.5 GHz channels. Does this mean my router doesn't have 5 GHz capability? Any further info would be appreciated!
#4 By: Michael Tunnell, September 7th, 2013 06:04
actually there are MANY products that use the 2.4 band that can interfere with Wireless but none do it as bad as a Microwave can.
well this is just some extra info but not specific to you other questions... if you have a 802.11 N Router and 802.11 N Laptop or something else then you will enjoy some awesome speeds BUT if you have ANY devices on the network that are B or G modes then you will lose the N compatibility. This means that if you have something that runs on G then your N hardware will drop down to G as the Router is forced to do so to compensate for the older device. The B or G or N setting means it will use the fastest it can but some devices can force it slower.
Yes but not all devices will be able to connect to the 5GHz band. This means that you will need to upgrade the hardware if it doesn't support the 5GHz band. Also if the router/modem is from your Internet Provider then there is a 99% guarantee that it won't support 5GHz at all. You will more than likely need to purchase a thirdy party router.
Channels 1-14 are based on 2.4GHz and 5GHz uses Channels 36-165 but just because you can't see those doesn't mean you can't use them. It just means that it isn't set for it...you have to go into the router admin and change it to use 5GHz instead...you can't use both so it uses 2.4 GHz by default to support as many devices as possible.
This article didn't mention a VERY important aspect to the WiFi interference...and that is Distance. The farther away the router is from the Microwave the weaker the affect is to the router. I have mine on the opposite side of the house and I never receive any interference at all.
There are many other tactics to combat this but the cheapest solution is to just move the router as far away as possible and often that works quite well. This may hurt speeds compared to N mode but if you have anything using G already then you aren't using N mode anyway.
#5 By: Naman Sood, September 7th, 2013 11:44
Completely true. To put "distance" between our router and microwave, we just put the router on a shelf close to the roof of the house, and the microwave in another room, on a pretty low shelf.
#6 By: Rusty Harris, September 8th, 2013 21:21
It's called harmonics also. If the microwave resonates in the same band as the wi-fi, it will cause problems. Heck, who knows what is bouncing around inside that cage, absorbing into and out of
what you are cooking. Considering how cheap microwaves are these days, the magnatron probably
isn't of the best construction, as long as it meets the shielding requirements.