I am new to scanning P25 digital systems and now have a BCD436HP scanner. My question is should I be able to pickup the CFD digital system in Elgin with a discone antenna at 30'? I know that that scanner has location settings, but I think I have that all disabled. I can receive fine with the scanner when at work in downtown Chicago. I just want to make sure I am not doing something wrong or if it is just a distance issue.