Garmin aera 500 Series Pilot’s Guide190-01117-02 Rev. A 113additional Features Overview GPS Navigation Flight Planning Hazard Avoidance Additional Features Appendices Index2) Touch the ‘+’ or ‘-’.Increase/decrease Channel NumberOr:a) Touch the Number Field to activate the keypad function.Activate Keypadb) Touch the desired numbers on the keypad and touch the OK Icon.Keypad Function3) Touch the OK Icon or the Cancel Icon to return to the Channel List. If theselected channel is unavailable or off air, the OK Icon is subdued.USING FAVORITESFavorites is a customized category of up to 30 of your XM Radio favorites.To add a channel to Favorites:1) From the ‘Home’ Screen touch the Xm Radio Icon.2) Touch and hold the desired channel. A confirmation window is displayed.3) Touch Yes.