I broadcast my Pandora/iTunes via FM to my local devices... presumably there are wattage limitations, under which one is presumed to be operating for personal use (similar to the "car adapters" which "plug in" via FM broadcast)?
Anyway, frequency selection was a manual process, and while the best sound quality was found on frequencies where no radio stations transmitted, it was fully possible to dial in an already occupied frequency. Power output was low, but strong enough to overpower anything in a 10-15 m radius, forcing nearby cars in a traffic jam to listen to my music.
We'll see if anybody directionfinds me =D —73
What does it mean to not accept interference?
If you're an unlicensed user, you just have to live with it.