So I've got a car radio without an auxilliary input, and a cheap one of those FM transmitters that sends out my mp3 signal via FM.
Has anyone had much luck with these? It seems like there's just no space in the FM signal for the trnsmitter to get through. All I get is interference from the 'real' radio.
Are more expensive ones more powerful or something to override weak radio stations in the gaps between the main senders?
The obvious step is a new car radio, but it's the official built-in one and trying to avoid spending much!

