According to the "math", 15 kHz won't work for analog repeaters. The "math" is also responsible for the umpteen 6M bandplans in use across the USA.
It's not pure math. If only it were.... It's more art and opinion than pure math. Joe M. Bill Powell wrote: > Do the math: If you can't divide the "new" channel by > 6.25 or 5 it can't be used for D-Star.
