I tried mine with a standalone radio. The transmitter is so weak that I had to hold the transmitter end of the phone within 2 centimetres of the antenna to hear anything, and there was still lots of static.

Mine works well, everywhere I have tested it.

I found out that when I keep the N900 close to the radio in a car, I get better signal to noise ratio. Prob. depends on the radio. Worth trying out if the quality isn't satisfactory. Also rotating the N900 in different positions affects the s/n ratio.

Mine has worked really well too. Lot better than the separate FM transmitter I had earlier. Sound is really good unless the charger is connected.

Was quite surprised actually because the N900 is sold worldwide and thus the power might be limited by the country with thightest laws?

i'm shocked to hear people have signal issues!
I used mine last week in the car in my pocket fine. Only to hear that the friend in the car behind could hear it when she was close (At traffic lights etc) - so i got a good 10 feet if not more from mine!

Have tested it on 4 radios, and i can see a slight difference with some though. One of the House radio's needs the N900 within 4 foot for it to work!

my fm transmitter works like a charm
i've tested in a new car and a old car, in both fm transmission sounds stunning

Works nicely in my car. Much stronger than the transmitter in the N97 that I had. The trick is to find a frequency with very little noise.

i wish it supported frequencies lower than 88 and higher than 107.9 MHz

also it would be nice if it could also support resolution of 0.05 MHz

does anyone know whether there is a config file with the min and max values for the transmitter GUI?

Suggestion: we should create a wiki page with best station to transmit on in different local markets. like in boston 88.5 works pretty well

None of the frequencies works well for the Dallas area.

Thats ok... no one likes texas anyway