Oh seriously some members here really should enable some more of their brain cells, you take the whole topic way too serious. The N900 has a FM transmitter with a few nW and even "tuned" it wouldn't be able to disturb ANY signal out there. You may can disturb your TV if you hold it near your TV antenna but except that its not able to take any influence on the public signals. So I guess most of you are simply joking or the public transmitters in the US are really that weak, they may should use German products instead If we would talk about tuned "real" transmitter hers with several Watts of strength I could get your point, but a mobile phone with 0,0000...W is a joke compared to the public transmitters. That is also one of the reasons why nobody would be able to trace you, the signals is simply too weak! P.S: Don't forget to mod also the receiver