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It is often impossible to avoid broadcasts to space.
Modern radio systems that provide signals such as communications, music, TV and other entertainment, must be long-ranged and high-powered to reach a broad audience
Our obnoxious TV program will anger extraterrestrials
This all plays upon the Fermi paradox and whether or not there is intelligent life looking for other intelligent life for what ever reason. The most likely explanation is that we are alone, the first intelligent life or that higher life forms don't care about us.
Our radio-waves illustrate us to be uninteresting and not of any value to an entity capable of arriving here.
Any intelligent Alien race that could receive our message would be light years away. In the time it would take to travel that distance one of our species would likely go extinct. If they are capable of traveling such a distance, they likely use communications far more advanced than radio.