Hi Dave,

Here is a link to FT9 Best Practices.
https://www.onallbands.com/%EF%BB%BFtop-10-tips-for-succeeding-in-ft8-mode/

The point is that you do not take up any more band space as you and the person you are communicating with are in different time slots. The best practice is to find a clear frequency and then lock your transmit frequency to that.

73
Evan
AC9TU