newoldham wrote : "I base this on the fact that AM radio is, in fact, crystal clear."
What kind of antenna are you using? My own experience was that with a long-wire antenna there was lots of BC interference. (I am about 10 km from an AM broadcast transmitter site, with more of them slightly further away). When I switched to using a dipole for 40 m or my multi-band tuned vertical, all the broadcast interference disappeared.
73,
... Martin VE3OAT
