Forgot to mention that it was Lyle who suggested doing it this way. Worked great, too. Thanks, Lyle! Eric > Using the AM radio in my stereo (a Sony STR-D1090, synthesized tuner), my > active whip, and my DDS exciter (running at 639 kc and with a straightened > paper clip stuck into the bnc) as a bfo, I got this capture: > > http://www.nutstreet.net/captures/kfi_01.jpg