
Preliminary
Garmin Proprietary 3
OPERATION – COM
190-00302-01 Page Rev. 1 Garmin G1000 VHF NAV/COM Pilot’s Guide
1.4 COLOR CODE
Frequencies located in the active field are displayed
in either green or white.
• An active frequency that is displayed in green
indicates that the corresponding radio is selected
(i.e., in use).
• An active frequency that is displayed in white
indicates that the corresponding radio is not
selected.
Frequencies located in the standby field are displayed
in either white or gray.
• The standby frequency that appears in the tuning
box is displayed in white.
• The standby frequency that is not in the tuning
box is displayed in gray.
NOTE: In GPS mode, both active NAV frequencies
are displayed in white.
NOTE: In split COM mode, both active COM
frequencies are displayed in green.
1.5 TUNING BOX
On both the PFD and the MFD, a cyan tuning box ap-
pears over the standby frequency field and can be moved
from one standby frequency field to another for the pur-
pose of tuning or radio selection.
In both the COM and NAV windows, the frequency
toggle arrow appears next to the tuning box, between the
active and standby frequencies.
Frequency Toggle Arrow Frequency Tuning Box
Figure 1-3 Frequency Toggle Arrow and Tuning Box
1.6 FREQUENCY TOGGLE ARROW
A Frequency Toggle Arrow appears between the two
frequencies of the radio sub-window on which the fre-
quency tuning box is located. Pressing the dual COM or
NAV knob toggles both the frequency tuning box and the
Frequency Toggle Arrow between the radios.
NOTE: If the frequency tuning box is on a
selected COM sub-window when a signal
is received or transmitted for this radio, the
Frequency Toggle Arrow is replaced by an
RX or a TX
indication, respectively.
NOTE: When the desired frequency is entered in
the tuning box, it becomes a standby frequency.
Pressing the Frequency Toggle key places this
standby frequency into the active field, and vice
versa.
1.7 RADIO STATUS INDICATIONS
• RX – When a signal is received on a COM radio,
a white RX indication appears to the right of the
corresponding COM frequency for the duration of
the signal reception.
• TX – When a microphone is keyed, a white TX
indication appears to the right of the correspond-
ing COM frequency for the duration of the signal
transmission.
• ID – When the VOL/PUSH ID knob is pressed, a
white ID indication appears to the left of the NAV
frequency on the selected NAV sub-window and
the Morse code identifier audio for the selected
VOR frequency can be heard if the corresponding
NAV radio is selected on the audio panel.
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G1000_COM-NAV_PG.indd 3 2/10/2004, 8:47:24 AM