The question of whether it is legal or illegal is irrelevant for this discussion. The question should be whether any of these reported unusual drone behaviors are caused by the drone electronics, or people making a hobby out of disrupting them. The technology is there, and as a high voltage enthusiast, myself, I know there are people who would find this entertaining.I would say that is unit is or will be illegal as it is transmitting. FCC violations ie Look at A CB 4 watts on the transmit side.