Andy, I ran XR captures overnight. Last gasp of a signal was close to two hours after sunrise! Signal was readable all night except during a period or QRN that occurred between 12:30 and 1 a.m. Most consistent period was between about 4 and 5 a.m. http://w4dex.com/lf/lowfer/captures/xr/xr_184.322khz_27oct08.jpg Dex