2.18.1 Service designation: D.ATIS
2.18.3 Service designation: 135.4 MHz
2.18.4 Hours of operation: 24
2.18.1 Service designation: EMERG
2.18.3 Service designation: 243 MHz
2.18.1 Service designation: ALCP
2.18.3 Service designation: 252.1 MHz
2.18.1 Service designation: DEP/P
2.18.3 Service designation: 269.5 MHz
2.18.1 Service designation: APCH/P CLASS B
2.18.3 Service designation: 284 MHz
2.18.1 Service designation: CLASS B
2.18.3 Service designation: 290.2 MHz
2.18.1 Service designation: DEP/P
2.18.3 Service designation: 307.2 MHz
2.18.1 Service designation: DEP/P
2.18.3 Service designation: 337.4 MHz
2.18.1 Service designation: APCH/P CLASS B IC
2.18.3 Service designation: 393.1 MHz
2.18.1 Service designation: APCH/P DEP/P
2.18.3 Service designation: 349 MHz
2.18.1 Service designation: APCH/P CLASS B
2.18.3 Service designation: 133.625 MHz
2.18.1 Service designation: APCH/S
2.18.3 Service designation: 124.35 MHz
2.18.1 Service designation: DEP/P
2.18.3 Service designation: 125 MHz
2.18.1 Service designation: APCH/S
2.18.3 Service designation: 125.7 MHz
2.18.1 Service designation: O’HARE TWR CENTER LCL/P
2.18.3 Service designation: 126.9 MHz
2.18.1 Service designation: O’HARE TWR CENTER LCL/P
2.18.3 Service designation: 120.75 MHz 2.18.1 Service designation: O’HARE TWR CENTER LCL/P
2.18.3 Service designation: 132.7 MHz
2.18.1 Service designation: LCL/S
2.18.3 Service designation: 127.925 MHz
2.18.1 Service designation: CLNC DEL/P
2.18.3 Service designation: 121.6 MHz
2.18.1 Service designation: O’HARE TWR NORTH GC/P
2.18.3 Service designation: 124.125 MHz
2.18.1 Service designation: O’HARE TWR LCL/P
2.18.3 Service designation: 128.15 MHz
2.18.1 Service designation: DEP/P
2.18.3 Service designation: 126.625 MHz
2.18.1 Service designation: D.ATIS
2.18.3 Service designation: 282.225 MHz
2.18.4 Hours of operation: 24
2.18.1 Service designation: GND CON CENTER (INBOUND)
2.18.3 Service designation: 121.9 MHz
2.18.1 Service designation: GND CON CENTER (OUTBOUND)
2.18.3 Service designation: 121.75 MHz
2.18.1 Service designation: O’HARE TWR CENTER GND/P
2.18.3 Service designation: 226.675 MHz
2.18.1 Service designation: O’HARE TWR CENTER LCL/P
2.18.3 Service designation: 348 MHz
AD 2.19 Radio navigation and landing aids
2.19.1 ILS type: DME for runway 14R. Magnetic variation: 3W
2.19.2 ILS identification: ORD
2.19.5 Coordinates: 41.57.37.71N / 87.54.00.00W
2.19.6 Site elevation: 665 ft
2.19.1 ILS type: Glide Slope for runway 14R. Magnetic variation: 3W
2.19.2 ILS identification: ORD

Federal Aviation Administration Twentieth Edition
2.19.5 Coordinates: 41.59.15.81N / 87.55.55.22W
2.19.6 Site elevation: 662 ft
2.19.1 ILS type: Outer Marker for runway 14R. Magnetic variation: 3W
2.19.2 ILS identification: ORD
2.19.5 Coordinates: 42.03.21.36N / 88.00.28.05W
2.19.6 Site elevation: 693 ft
2.19.1 ILS type: Inner Marker for runway 14R. Magnetic variation: 3W
2.19.2 ILS identification: ORD
2.19.5 Coordinates: 41.59.32.74N / 87.56.00.00W
2.19.6 Site elevation: 659 ft
2.19.1 ILS type: Localizer for runway 14R. Magnetic variation: 3W
2.19.2 ILS identification: ORD
2.19.5 Coordinates: 41.57.38.76N / 87.53.59.11W
2.19.6 Site elevation: 651 ft
2.19.1 ILS type: Middle Marker for runway 14R. Magnetic variation: 3W
2.19.2 ILS identification: ORD
2.19.5 Coordinates: 41.59.46.54N / 87.56.22.90W
2.19.6 Site elevation: 674 ft
2.19.1 ILS type: Localizer for runway 32L. Magnetic variation: 3W
2.19.2 ILS identification: RVG
2.19.5 Coordinates: 41.59.30.50N / 87.56.00.00W
2.19.6 Site elevation: 663 ft
2.19.1 ILS type: DME for runway 32L. Magnetic variation: 3W
2.19.2 ILS identification: RVG
2.19.5 Coordinates: 41.59.34.48N / 87.56.00.00W
2.19.6 Site elevation: 677 ft
2.19.1 ILS type: Glide Slope for runway 32L. Magnetic variation: 3W
2.19.2 ILS identification: RVG
2.19.5 Coordinates: 41.57.52.64N / 87.54.21.11W
2.19.6 Site elevation: 648 ft
2.19.1 ILS type: Outer Marker for runway 32L. Magnetic variation: 3W
2.19.2 ILS identification: RVG
2.19.5 Coordinates: 41.53.39.91N / 87.49.34.69W
2.19.6 Site elevation: 99999 ft
2.19.1 ILS type: Middle Marker for runway 32L. Magnetic variation: 3W
2.19.2 ILS identification: RVG
　
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