3-13190-01182-01 Rev. A Garmin GNC 255A/255B Pilot’s Guide3.3.3 Nav Database FrequenciesThe GNC 255 contains a large database of Nav frequencies that may berecalled by identifier.1. Press FUNC to access the Functions. With the Nav FrequencyFunction highlighted, turn the SMALL knob to view the NavDatabase function. Then, press ENT.2. Turn the LARGE knob to move the cursor to highlight acharacter.3. Turn the SMALL knob to select the desired character.Turn LARGE KnobTo Move CursorTurn SMALL KnobTo Select CharacterPress the ENT Key to Savethe Displayed Value Press the CLR Key To Returnto the Previous MenuFigure 3-21 Nav Database Frequencies4. Repeat steps 2 and 3 to complete the desired identifier andthen press the ENT key.5. If available, the Frequency Type will be highlighted. Turn theSMALL knob to select the desired frequency.Selected IdentifierPress FLIP/FLOP Key To SetSelected Freq As ActiveSelected FrequencyWpt TypePress ENT Key To SetSelected Freq As StandbyFigure 3-22 Selected Nav Database Frequency6. Press and release the FLIP/FLOP key to set the selectedfrequency as the Active frequency.7. Press the ENT key to set the selected frequency as the Standbyfrequency.