A radio antenna is a device used to receive or transmit radio signals. It is like a metal stick or wire that helps capture or send out radio waves in order to allow the communication between radios or other devices. Full definition
The only switch in a somewhat weird location is the power radio antenna control, on the center console next to the passenger seat. (articles.orlandosentinel.com)
The lower portion of the side - view mirrors and the satellite radio antenna come in black, as well. (Autoweek.com)
The sleek radio antenna sticks out of the back of the car, rather than in the front. (autolist.com)