Oki followed, likely having to dip her head a bit to make it inside a smaller door and did look. "Interesting," she said. "Using crystalline receivers of radio waves is far from unknown back home, but the form of that I know of is not new." She gave a long, studying look. "Radio transmissions are all about signal strength and usually amplitude or frequency modulation. Interference with them can mean either drowning out the source locally - broadcasting on the same wavelength and overpowering the local broadcast strength - or setting something up that interferes with radio as a whole, a bit like smoke. You can even mask them completely out of a limited area, but that's quite resource-intensive. Hmmm... There's also the very short frequencies that can use the very atmosphere to increase its range. As for a more local broadcast, the way I've seen in most use for a hijack is a small, portable transmitter that's jacked right into the source, or the source itself changed so as to appear operational to anyone monitoring it internally, but in reality, it's broadcasting Rob Zombie to the entire outside world." She came back from her thoughts and resumed a small smile. "To answer your question, I am somewhat familiar."