My wife just purchsed it for me and the first instruction in setting it up say to park the car in a shaded area where it is 70-90 degress to install the contacts. Can I install it now albeit it is Late Nov here in the NYC area and it would be until late spring I can do so. Really wouldnt want to wait till then to install the setup. Can I install it now and start listening as well as any members here have the same setup fro their vehicles ?? If so how is this antenna for airband listening ?