Originally Posted by Unassisted
Here's how those work:
FM transmitter plugs in to iPod headphone jack. (No headphones required.)
Music from iPod goes into transmitter.
Transmitter sends music on a specific frequency in the FM band.
Any nearby FM radio tuned to that frequency receives music from the transmitter.
So it's alot like those old FM converters we use to buy 30+ years ago when they only installed AM radios in cars.