Identifies the advance from and to bands when a band-advance arrangement is involved.
NOTE 1: This information is entered with the first character indicating the Band and the following 3 or 4 characters indicating the Simulated Facility Group (SFG) codes. Each set of information is separated by a comma, (i.e., 2104, 3105 or 32047,41034).
USAGE: This field is conditional.
NOTE 1: Optional when the ACT field on the ASR Form is “N” or “C”, otherwise prohibited.
DATA CHARACTERISTICS: 19 alpha/numeric characters
EXAMPLE: 3 1 0 6 , 4 1 0 7 , 5 1 0 8