The problem is that both microwave ovens and wi fi operate on the same frequency 2 4 ghz.
Microwave and wifi interference.
This includes the most recent routers like the 802 11n and the 802 11ac.
Cisco s 20 myths of wi fi interference 2007 here s an excerpt.
Are scratching your head wondering how to block microwave from wi fi.
Depending on the positioning of your wireless router your networked device and the appliance you may even have the wireless network cut out when the microwave or cordless phone is in use.
Why could a microwave interfere with your wi fi.
This means that a microwave oven operating at the same frequency as one of your 802 11 access points can reduce the effective throughput and capacity of.
Some other wireless devices operating in 2 4 ghz or 5 ghz spectrum including microwave transmitters wireless cameras can also contribute to wireless interference.
Bring the bluetooth devices that are connecting to each other closer together.
This means that if a microwave is somehow leaking radiation into our home at a level close to 2 4ghz that could potentially cause a problem in the connection for your wi fi.
How to fix microwave interference with wi fi.
For example microwave ovens emit interference on a 50 percent duty cycle as they cycle on and off with the 60 hz ac power.
Some microwave radiation leaks out and interferes with wifi signals i e radio waves of the frequency 2 4 ghz.
This is the other major band wifi networks can operate in though 2 4 is far more common and should not suffer interference from microwave ovens.
In theory a properly shielded microwave shouldn t leak any radiation but the reality is that they leak.
Note that this interference at 2 4 ghz is caused by commonly used wifi devices e g wifi routers smartphones cordless telephones bluetooth devices and so on that work on 802 11a and 802 11g standards.
Generally our microwaves and wi fi operate on the same frequency at 2 4ghz.
A variety of household appliances can cause wireless interference including cordless phones baby monitors and microwave ovens.
Wireless home networks transmit signals in a narrow radiofrequency range around 2 4 ghz and it s common for devices on the same frequency to affect the wireless signal and slow down an internet connection electronics such as cordless phones garage door openers baby monitors and microwave ovens may use this frequency range.
Avoid using your wireless devices near common sources of interference such as power cables microwave ovens fluorescent lights wireless video cameras and cordless phones.
Addressing your question about different channels microwave ovens which should label the output frequency somewhere should use 2 450 ghz.