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 Eric Smith, KD5UWL, northeast Oklahoma, EM25ax