A device that adapts an MP3 player or other portable audio source to a car's audio system via the FM radio. It retransmits the analog output of the headset jack as one of several FM channels ...

To see which FM services are available where you live, use our Transmitter checker tool. Portable FM Radios If you are using a portable FM radio it is likely to have a built-in telescopic aerial.

What do they look like? The FM transmitter and the FM receiver are both small, portable devices that are a little bit bigger than a pack of playing cards. The look can vary depending on the ...