Garmin GNS 430 - Manual (Page 30)

GNS 430(A) Pilot’s Guide and Reference 190-00140-00 Rev. P 2-2
SECTION 2
COM
While receiving a station, an ‘RX’ indication (Figure
2-1) appears in the upper right corner of the COM Window
to the immediate right of ‘COM’. A ‘TX’ indication appears
at this location when transmitting (Figure 2-2).
‘TX’ Transmit Indication
Figure 2-2 ‘TX’ Transmit Indication
NOTE: The tuning cursor normally appears in the
COM Window, unless placed in the VLOC Window
by pressing the small left knob. When the tuning
cursor is in the VLOC Window, it automatically
returns to the COM Window after 30 seconds of
inactivity.
To select a COM frequency:
1) If the tuning cursor is not currently in the COM
Window, press the small left knob momentarily
(Figure 2-3).
Figure 2-3 Standby Frequency of 135.325
2) Turn the large left knob to select the desired
megahertz (MHz) value. For example, the ‘135’
portion of the frequency ‘135.325’.
3) Turn the small left knob to select the desired
kilohertz (kHz) value. For example, the ‘.325’
portion of the frequency ‘135.325’.
NOTE: The active frequency in either window
cannot be accessed directly, only the standby
frequency is highlighted by the tuning cursor.
4) To make the standby frequency the active
frequency, press the COM Flip-flop Key
(Figure 2-4).
Figure 2-4 Active Frequency of 135.325
The tuning cursor is normally in the COM Window.
To select a VOR/Localizer/ILS frequency, press the small
left knob momentarily to place the cursor in the VLOC
Window. Additional instructions for VOR/localizer/ILS
operations are available in Sections 6 and 9.