The IF bandwidth is as wide as the input bandpass filter. A DC receiver won't work, you really need an I/Q receiver like the SoftRock. Jean-Claude PJ2BVU -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.467 / Virus Database: 269.7.1/805 - Release Date: 5/15/2007 10:47 AM