OPERATION – NAV
2.5 MANUALLY TUNING A COM
FREQUENCY
COM frequency manual tuning is performed by using
the dual COM knob.
• The MHz (left) portion of the frequency can be
tuned by turning the large COM knob.
• The kHz (right) portion of the frequency can be
tuned by turning the small COM knob.
Turning either knob clockwise increases the tuned
frequency. Conversely, turning either knob counterclock-
wise decreases the tuned frequency. The tuned frequency
is placed in the standby frequency fi eld of the COM Fre-
quency window.
!
NOTE: Only when tuning frequencies manually
can the standby frequency fi eld for a COM radio
be tuned to the same frequency as that located
in the active fi eld for the same COM radio.
2.6 TOGGLING COM FREQUENCIES
Pressing the COM Frequency Toggle key toggles the
COM frequencies between the active and standby fi elds of
the COM radio on which the Frequency Toggle Arrow
is located.
Pressing the COM Frequency Toggle
key toggles the COM frequencies.
Figure 2-3 Toggling COM Frequencies
6
Garmin Proprietary
G1000_COM-NAV_PG.indd 6
2.7 SELECTING COM RADIOS
To be selected, a COM frequency must be placed in
the active fi eld and the corresponding COM radio must
be selected on the GMA 1347 audio panel. When se-
lected, the COM frequency of the selected COM radio is
displayed in green.
!
COM radio selection is
performed via the audio
!
!
Garmin G1000 VHF NAV/COM Pilot's Guide
NOTE: A COM radio can only be selected through
the GMA 1347 audio panel (COM MIC key).
Please, see Garmin GMA 1347 Pilot's Guide
for details.
panel.
Figure 2-4 Selecting COM Radios
NOTE: The selected COM frequency is always
displayed in green.
NOTE: In split COM mode, both COM1 and
COM2 radios are selected; the associated active
frequencies are thus displayed in green in the
COM Frequency window.
Figure 2-5 Split COM
Top portion of
the GMA 1347
audio panel
190-00302-01 Page Rev. 1
2/10/2004, 8:47:40 AM
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