Your Christmas Lights Aren't Causing Your Wi-Fi Woes
All electronics emit signals that can interfere with your Wi-Fi, but Christmas lights aren't the worst offender in your home.By Evan Thomas | December 2, 2015
While Christmas lights do contribute to the electromagnetic noisiness that can interfere with your home Wi-Fi, they're not the worst offender.
That would be your neighbors, whose routers run on the same wireless channels as yours.
Microwaves put out the same 2.4 GHz radiation as many older routers, too.