BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a block diagram of a communication system.
FIG. 2 is a flow chart of a frequency allocation process.
FIG. 3 is a flow chart of a frequency allocation process.
FIG. 4 is a flow chart of a weather based frequency allocation process.
FIG. 5 is a diagram of a weather map.
FIG. 6 is a block diagram of an ATC and areas surrounding the ATC.
FIG. 7 is a flow chart of a frequency allocation process.
FIG. 8 is a diagram of a cellular coverage map.