The Rf Frequencies from the old style overseas radio stations were dangerous too. I once heard of a guy who didn't shut the transmitter down going into the tube room and having his arm severed. My worst thing was just a tiny prick from one of the military radios as I used a lead pencil to test if I had them tuned to max power and this one happened to be a good one and went right through the lead and left a spot the size of the lead in my finger. It almost 10 years for that spot to finally come out. And it stung like mad but it sure made me pay attention when I was working on the high power microwave and other systems.
Ron
