KD9DJC, please note to include Grissom AFB in Indiana, Volk Field in WI, Truax Field in Madison WI, General Mitchel Field, In Milwaukee, Peoria's airport, Camp Atterbury in Southern Indiana in your searches. All have military units stationed there. To have optimal reception, get an antenna up outside as high as possible. Also, add all Chicago center frequencies (ZAU) included UHF in your receiver. Best advice is to be patient. Do not expect to turn on the radio and expect to instantly hear traffic.