So some analog FM broadcasts are not lossy? I believe all digital over the air broadcasts are lossy, whether they are satellite or terrestrial (ground based). The data rate needed to make them lossless would be too great I think. The new HD FM and HD AM signals will be transmitted along with the traditional analog AM and FM signals. They claim that HD FM will approach CD quality and that HD AM will approach analog FM quality. The greatest benefit will be for AM in my opinion, because analog FM already sounds good. Now I'll get to hear Rush, Hannity, and O'Reilly spew their pro-Iraq war pro-Bush propaganda in high definition