Am pretty happy with the device below, which also charges. Only broadcasts on one frequency (87.9 FM) but works well in Chicago and reportedly almost all locations in U.S. The single frequency also simplifies setup. Just plug it in and tune the radio to that frequency. The sound is not perfect, but is on par with decent FM. Does the trick until I get around to installing something integrated.

http://eshop.macsales.com/item/Newer...gy/ROADTRIPLS/