Hi im kind of new to scanning and ive been looking to buy an antenna. I live in the lake county area and I mostly listen to police frequencies in the area. Northern illinois and southern wis. Ive been looking on line ane there is just way too many to choose from. I have a bct 15 and would like to mount it in my vehical and also listen to it at home. the antenna would mostly be used for the vehicle. Any suggestions? Thanks for your time.