JVC KD-R306 Instructions Manual page 32

Title assignment
You can assign titles to 30 station frequencies (FM and
AM) using 8 characters (maximum) for each title.
1
Select "FM" or "AM."
2
Show the title entry screen.
3
Assign a title.
1
Select a character.
12
2
Move to the next (or previous) character
position.
3 1
Repeat steps and
entering the title.
4
Finish the procedure.
To erase the entire title
In step 2 above...
2
until you finish