Nik
Lifer
that's pretty cool.. I wonder how much amplification he could put on that piece of equipment and how far it could transmit? For instance, I wonder if he could take over multiple screens at once only using one transmitter under high amplification.
Waveguide antenna?
Also, this video is FAKE. It's done in post production. Those screens are closed circuit.
http://hackaday.com/2011/03/14/commandeering-public-video-screens-real-or-fake/
That's a USB cell phone charger, too.