I was working LSB tonight, (Cobra 139XLR) talking with, Ontario, Toronto, Wisconsin, Michigan, etc.. Getting good reports for signal, but most commented that I sounded "off frequency". Well, it seems to me that everybody sounds "off frequency" until you tune them in better. Question is, if I am really off frequency, how do I fix that? My frequency counter doesn't work for sideband. Do I need to have a techie look at it?