Yamaha MCX-CA15 Owner's Manual page 206

Editing tuner preset names
4
Use u/d to select "Edit title" and press SELECT.
The text entry screen appears.
5
Use u/j/d/i and SELECT to enter the new name for the selected
preset, and then select "OK" and press SELECT.
To cancel editing, select "Cancel" and press SELECT.
The selected tuner preset station appears in the list with the new name.
36 MusicCAST Version Upgrade 2
Number of characters for
tuner preset station names
The maximum number of
characters for a tuner preset
station name is 30.