United Airlines - Chicago O'Hare International Site Research

• ORD has moved to a Tier III system as of 5/23

Sites

This Connect Plus system consists of two sites - 396-1 and 396-2 (both located at O'Hare Airport). Below is the channel mapping determined so far (channels are listed in time slot 1 / time slot 2 order):

396-1 Color Code 1:

• 476.3375 - LSN 1 & 2
• 476.6125 - LSN 3 & 4
• 477.1625 - LSN 5 & 6
• 477.2625 - LSN 7 & 8

Control channels rotate between channels 1,3,5 and 7 of each site every 24 hours. (unable to find last four freqs / eight channels at this time, control channel data does indicate sixteen active channels for 396-1)

396-2 Color Code 1:

• 460.725 - LSN 1 & 2
• 476.5875 - LSN 3 & 4
• 477.1125 - LSN 5 & 6
• 477.2375 - LSN 7 & 8
• 460.700 - LSN 9 & 10
• 476.5375 - LSN 11 & 12
• 477.0125 - LSN 13 & 14
• 477.2125 - LSN 15 & 16

Control channels rotate between channels 1,3,5 and 7 of each site every 24 hours.

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