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2-7190-01182-01 Rev. A
Garmin GNC 255A/255B Pilot’s Guide
5. Turn the LARGE knob to select the waypoint Type.
6. Turn the SMALL knob to select characters.
7. Turn the LARGE knob to move the cursor.
Figure 2-12 Nav User Frequency Type Selection
8. After selecting the desired characters, press ENT.
Frequency Type Symbol Description
VOR Very High Frequency Omni-Directional Range
DME Distance Measuring Equipment
LOC Localizer
ILS Instrument Landing System
01-36 Runway Heading
Blank None
Table 2-2 - Nav Frequency Type List
2.3.3 Listening to the Nav Audio Channel
Nav ident is enabled by pressing the Nav Volume knob when the Nav display
is active. When Nav ident is enabled, the ID annunciation will appear to the left
of the active Nav frequency.
Figure 2-13 Listening to the ID for a Nav Frequency
Nav audio volume is adjusted using the Nav Volume knob. Turn the Nav
Volume knob clockwise to increase volume, or counterclockwise to decrease
volume.