Garmin gnc 420 用户指南

GNC 420/420A Pilot’s Guide and Reference

7-6

1)  Press  the  down  arrow  of  the  RNG  Key  to 

display a smaller map area.

2)  Press the up arrow of the RNG Key to display 

a larger map area.

The following descriptions and abbreviations are used 

on the Airport Runway Page:

•  Type - Usage type: Public, Military, or Private
•  Surface - Runway surface types include: Hard, 

Turf, Sealed, Gravel, Dirt, Soft, Unknown, or 
Water

•  Lighting - Runway lighting types include: No 

Lights, Part Time, Full Time, Unknown, or 
Frequency (for pilot-controlled lighting)

7.4  AIRPORT FREQUENCY PAGE

The Airport Frequency Page displays radio frequencies 

and  frequency  types  for  the  selected  airport,  as  well  as 
sector  and  altitude  restrictions  (where  applicable).    If 
the  selected  airport  has  an  ILS  approach,  the  localizer 
frequency(ies)  are  also  listed  on  the  Airport  Frequency 
Page (Figure 7-12).  The Airport Frequency Page may be 
used to quickly select and tune a COM  frequency. VLOC 
frequency is for reference only.

1)  Press  the  small  right  knob  to  activate  the 

cursor.