"Nowadays, microwave ovens don't send out radio waves any more" Every microwave oven I've ever had, including name-brand ones purchased in the last year, sent

"Nowadays, microwave ovens don't send out radio waves any more" Every microwave oven I've ever had, including name-brand ones purchased in the last year, sent out loads of interference on one or more wifi channels. This morning I noticed that my connection at the breakfast table was really crappy. The upstairs hotspot likes to change channels every few days, and it had picked 11. When the microwave stopped, everything cleared up, so I forced it to channel 1 and tested with the microwave again. No problems there.