OPERATION – COM
SWITCHING THE TUNING BOX BETWEEN
COM RADIOS
Pressing the dual COM knob toggles the frequency
tuning box between the COM1 and COM2 fields.
NOTE: When a different COM MIC is selected on
the audio panel, the frequency tuning box also
moves on both the PFD and MFD.
Pushing the dual COM knob switches the
tuning box from one COM radio to the other.
Figure 4.2.3 Switching COM Radios
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.
The frequency is tuned in the standby frequency field
of the COM Frequency window. Turning either knob
clockwise increases the tuned frequency. Conversely,
turning either knob counterclockwise decreases the tuned
frequency.
4-6
Garmin G1000 VHF NAV/COM Pilot's Guide for Mooney M20M & M20R
TOGGLING COM FREQUENCIES
Pressing the COM Frequency Toggle key toggles the
COM frequencies between the active and standby fields of
the COM radio on which the Frequency Toggle Arrow
is located.
Pressing the COM Frequency Toggle
key toggles the COM frequencies.
Figure 4.2.4 Toggling COM Frequencies
SELECTING A COM RADIO
The desired COM radio can be selected using the COM
MIC keys located on the audio panel. When a COM MIC
key is annunciated on the audio panel, the corresponding
active COM frequency is displayed in green in the COM
Frequency window.
COM radio selection is
performed via the audio
panel.
Figure 4.2.5 Selecting a COM Radio
NOTE: Please see the Audio Panel Pilot's Guide
for further details on the COM MIC keys.
Top portion of the
audio panel
190-00445-00 Rev. A