See also:

Channel preset
...

Channel selection by operating the dial
Turn the “TUNE/TRACK/CH” dial clockwise to select the next channel and turn the “TUNE/TRACK/CH” dial counterclockwise to select the previous channel. ...

“up” and “down” switch
With radio mode selected Press the switch to the “” or “” side briefly to skip to a preset channel. Press the switch to the “” or “” side for more than 0.5 second to seek the next receivable ...