I have that same radio. All you do is this:

- Type in the current time using the number pad. Use the decimal button
for the ":". So, for instance, 12:30 PM would be 12.31. Then you press
the "Time 1/2" button and the time you pressed should lock in. Hope
this helps. If you need more in-depth info, there is a Yacht Boy radio
group on Yahoo Groups.