Total posts : 45366
Carl Blare has posted that he uses a limited-space antenna system built into a window frame. Such an antenna system is likely to have poor efficiency, which means low Q, and it is not surprising that Carl reported in this thread that he gets the same audio quality with his AMT-5000 as he gets with is AMT-3000. As I stated in my previous post, a low-loss, high Q, antenna is likely to cause envelope distortion in a Class E system. It would be very helpful if 1580 reports the kind of antenna system that he is using to show whether or not it is a high-quality antenna system that is causing his audio distortion.