maxperformance

i was just wondering how i could achieve the best reseption possible with one of these things. I hate the static, but think it i tune to the right radio station and have it in the "best location possible"best location ill be satisfied. My question being, where is the best location of the FM transmittor, it has a very long cord so it does not matter Currently I have it on the back windshield. Thanx for any input!