Originally Posted by
ajkc114
First off, thanks so much to the people that have contributed to this thread. It's been super helpful, and I hope it will help me secure my seat at PSA soon.
Just a question.
On the 10-9 for Charlotte, the ground frequencies are split into headings, 360-179 is one frequency, 180-359 is another. How does this work? I've seen airports split in half with a frequency for each side, never seen this. None of the people I normally go to with questions like these know either.
Thanks again for the help.
Like TallFlyer said, it means the east side and west side. Read clockwise around the compass, so 360-179 is the east side and 180-359 is the west side. You can expect to see similar listings for approach frequencies, only with 3+ ranges(i.e. 360-129: freq a, 130-214: freq b, 215-359: freq c), then, CLT has separate sets for above and below 8k MSL and in reality you'll basically ignore all of them and just do what the controller says
I guess you could say they are done as "bearing from" the center of the airport.