This is VERY illegal. As a consumer, you MUST comply with part 15 of the rules and regulations. Part 15 states that your device must accept any interference received, and it cannot cause any harmful interference. (Such as jamming an FM signal. ) It is even more dangerous when you are jamming FM, since pretty much all radio stations are licensed. Wh
en anyone is licensed, they can whack you with so many fines, it isn`t even funny.