Yes, you can actually hear microwave pulses

In the 1940s, when World War II was in full swing and radar transponders were military equipment to which many people were exposed, the personnel who worked with them reported hearing a clicking noise. The noise, oddly, always seemed to be inside or directly behind their head, no matter which way they were oriented… » 1/23/13 7:00am 1/23/13 7:00am