"Yes MY microwave is operating on a frequency of 2450 Mhz. See posted picture.
To answer your question "what modulation is it?"
I do not think it is modulated. All we have in there is a magnetron tube in an oscillating circuit tuned to this approximate frequency and spending its UHF energy in a cavity which is the area where we place the stuff to be heated. "
Remember oscillation=modulation
