Story : http://phys.org/news/2013-04-mobile-tv-dongles-nab.html
The key weapon in TV broadcasters' fight with Internet video upstart Aereo is something inelegantly known as a dongle.
The miniature TV antenna picks up free, mobile broadcast signals. It attaches to iPhone and iPad power ports and extends about 7 inches (180 millimeters), allowing users to view live local TV channels at not-quite-high-definition quality.
The device scans the airwaves for signals with the help of an app. The antenna doesn't sap a user's data plan or rely on Wi-Fi signals, but it does need to be recharged.
"If you're at a ball game or a Starbucks and everyone's trying to access the news, you're not going to get (video stoppages)," says Karen McCall, a marketing representative with Dyle Mobile TV, the venture backing the devices.