Garmin GNC 420(A) Pilot's Manual & Reference page 53

Scrolling through the list of frequencies:
1) Activate the cursor, if not already active, by
pressing the small right knob.
Turn the large right knob to move the cursor
2)
through the list of frequencies. If there are
more frequencies in the list than can be
displayed on the screen, a scroll bar along the
right-hand side of the screen (Figure 3-36)
indicates which part of the list is currently being
displayed.
Figure 3-36 Scroll Bar
3) To place a frequency in the standby field of the
COM Window, highlight the desired frequency
and press the ENT Key.
Some listed frequencies may include designations for
limited usage, as follows:
• 'TX' - transmit only
• 'RX' - receive only
• 'PT' - part time frequency
190-00140-20 Rev. K
If a listed frequency has sector or altitude restrictions,
the frequency is preceded by an 'Info?' designation.
Viewing usage restrictions for a frequency:
1)
Scroll
Bar
2)
3)
GNC 420(A) Pilot's Guide and Reference
Turn the large right knob to place the cursor
on the 'Info?' designation directly in front of
the desired frequency (Figure 3-37).
Figure 3-37 'Info' Highlighted
Press the ENT Key to display the restriction
information (Figure 3-38).
Figure 3-38 Restriction Information Page
To return to the NAV/COM Page, press the ENT
Key.
SECTION 3
NAV PAGES
3-19