Press "PGM", "New", "conv", scroll to the SList that you want to enter the freqy, make sure the "*" astrisk is "on"...Scroll down one line and where it shows 25.0000 type in your new freqy, on the next line you will see "search" and when a PL/DCS appears when the freqy is active press "stor'...Now before you leave your programming press "save".....