I have a PRO-106 and I love it. It monitors the MARCS system very very well. Although, I live a little ways from the closest tower. I have to sit the scanner in a window to be able to pick up the audio and decode the audio without the "digital" sound. I currently have a Radio Shack 800MhZ antenna. Any suggestions for improving signal? Have any of tried any other antennas with the PRO-106 and MARCS? Please advise. Hope everybody is staying unfrozen in this region.