Hi: I use the Airbase Civil Airband Base Antenna available at ebay from England. It is a little more expensive but works great. I get all military and civil from Littleton, including all the ground controllers at DIA, Front Range, Buckley, Centennial and Jeffco. It works well with other frequencies too but it is designed just for air traffic. If money is no object I use the AOR5000A which is a wonderful receiver. My pro 2096 and 97 do not pick up any ground controllers with the same antenna while the AOR picks them up . I am pretty far from DIA-46 miles-so needed a really good setup to receive the controllers so I invested quite a bit. It is an addictive hobby. Adkad