Com Window And Tuning - Garmin GPS 400W Pilot's Manual & Reference

1 - COM
Com Window and Tuning

COM Window and Tuning

Communication frequencies are selected with the
tuning cursor in the standby COM frequency field,
and using the small and large left knobs to dial in
the desired frequency. The standby frequency always
appears below the active frequency. The active fre-
quency is the frequency currently in use for transmit
and receive operations.
Tuning cursor in the COM window. Use the
small and large left knobs to dial in the
desired standby frequency.
A frequency may also be quickly selected from the
database by simply highlighting the desired frequency
on any of the main pages and pressing the ENT key.
This process is referred to as auto-tuning. Once a
frequency is selected in the standby field, it may be
transferred to the active frequency by pressing the
COM flip-flop key.
Once the standby frequency is selected, use
the COM flip-flop key to make the frequency
active for transmit and receive operations.
24
420W / 430W Only
While receiving a station, an "RX" indication
appears in the upper right corner of the COM window
— to the immediate right of "COM". A "TX" indication
appears at this location while you are transmitting.
The active frequency in either window cannot be
accessed directly—only the standby frequency will be
highlighted by the tuning cursor.
To select a COM frequency:
1.
2.
3.
To make the standby frequency the active fre-
quency, press the COM flip-flop key.
The tuning cursor will remain in the COM window.
The GNS 430W/AW unit has a built-in VOR/Localizer/
Glideslope capability. If you wish 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 opera-
tions are available in Sections 5 and 8.
190-00356-00 Rev B
NOTE: The tuning cursor will normally appear
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 will
automatically return to the COM window after 30
seconds of inactivity. This does not apply to the
GNS 420W.
If the tunng cursor s not currently n the COM
wndow, press the small left knob momen-
tarly.
Turn the large left knob to select the desred
megahertz (MHz) value. For example, the
"118" porton of the frequency "118.300".
Turn the small left knob to select the desred
klohertz (kHz) value. For example, the ".300"
porton of the frequency "118.300".