I am using the PSR500 updated to the latest firmware. I have never been able to hear traffic at Indy Intl airport or any other airport for that matter even if I am sitting at the airport itself. All I get is some static but cannot hear any voice. I would think if I am at the airport I can at least hear the tower clear. This happens at any airport I am at. I am using the Radio Shack 800mhz antenna. Anyone have this same problem or know how to fix it? Thanks!!!