Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Beware if there are few unused frequencies in your area

I purchased the Kensington after my casette adapter developed an annoying wheel noise. I heard and read a lot about the problems with FM transmitters, like static and audio quality but the Kensington was the best rated unit.It arrived the day before I had to take a business trip and thought it would be a great test. The first day I used it, it seemed to work great. The next day on my return trip home, all I got was static and could barely hear the music from my iPod. I tried every station I could find with little or no transmission on it, but the audio quality remained extremely poor.I am not sure if there are just too many stations broadcasting in the NYC metro area or this particular unit is defective, but since my car has a casette player I will go with casette adapter for now.If you have lots of unused frequencies, it might work in your area. Just be sure you can return it if it doesn't work out for you.