The Canadian Pacific and National Rail scanner stream provides audio of the radio communications between The Canadian Pacific and National Rail personnel and the railroad ... See more dispatchers in the Chicago, IL, United States area, covering frequencies most often used by Canadian Pacific, as well as Canadian National, near Towers B-12 and B-17 in Bensenville, including: • AAR 94 94 (161.520 mHz, Elgin Sub Road Channel) • AAR 54 54 (160.920 mHz, CN Waukesha Sub End-to-End Channel) • AAR 88 88 (161.430 mHz, Bensenville Yard Channel) • AAR 44 44 (160.770 mHz, C&M Sub Road Channel) • AAR 79 79 (161.295 mHz, CN Waukesha Sub, RTC Dial-in Channel) • AAR 25 25 (160.485 mHz, Union Pacific Milwaukee Sub Channel).