Something I've always wondered: Why do cheap portable radios get better FM reception than receivers? My current receiver, a Panasonic SA-HE100, gets pitiful reception (with the exception of one station that plays nothing but rap). Same with the Kenwood AR-A4040 that it replaced. I have correctly installed the vinyl-covered wire antenna that came with the HE100, so that's not the problem. How do I improve the reception?