FM radio transmitting?

[magneto576]

I'm getting a Dell Axim x50 PDA soon and I'm planning on mounting it in my car and watching movies on it. I have a Pioneer receiver and 2 12" kickers in my car, but no tape deck, so I will have to use the radio station transmitter (sortof like the thing for the Ipod) to get the sound output from the PDA to my car's system. My question: what is the maximum quality of FM transmission and how many channels does it support? is it mono or stereo? I'm just wodering because when I rip the DVD's to put them on the PDA I want to save as much memory as possible, so I figure I shouldn't rip the audio in a quality and channel output higher than the FM will receive. Also, in case this matters, the Axim uses the same sound processor as the Ipod, in case anyone has experience with those.

Thanks!

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[JimJ 5,000+ posts]

FM sound quality, though pretty good for over-the-air services, sucks. You're limited to 200KHz of bandwidth for the signal, and most transmitters won't go past 15kHz to avoid "chirping" and overmodulation. Mono or stereo depends on your transmitter. How many channels does it support? Well, everything from 88.1MHz to 108.1MHz...spaced apart by 200KHz.