I have just received my first scanner for my birthday. I am now trying to listen to some of the aircraft frequencies but have no luck. I am about 15 miles from JFK and when I enter any of the New York Approach or JFK frequencies it is giving me the Error message. I'm doing it like it says in the manual (or so I think) but the only station I hear is transmitting the weather. Can anyone assist? I am using Uniden model. Thank you in advance to anyone that responds.