Garmin MX20 User Manual

ADS-B Broadcast Mode Control
For ADS-B equipped installs, this feature allows the pilot
to control the broadcast mode of their aircraft.
Broadcast options are controlled via the Traffic Function
Menu and allow the pilot to toggle between Broadcast
FID / Broadcast VFR / Standby. The Standby option is
only available for the Legacy UAT.
Broadcast FID
Causes the currently set Flight ID and permanently
assigned ICAO address to be broadcast with the aircraft’s
current position. The Flight ID and the ICAO address
are shown on the lower right corner of the Traffic
Function page (see page 50 for an example). The Flight
ID is pilot-settable via the menu option “Enter FID” in
alphanumeric characters. The ICAO address is a value set
during system install by the installer.
Broadcast VFR
Causes a fixed Flight ID of “VFR” and a randomly
generated ICAO address to be broadcast with the aircraft’s
current position. This mode is similar to anonymously
squawking “VFR 1200” on a standard transponder.
Standby (Legacy UAT only)
Causes the transmit function of ADS-B to enter the
standby mode. Other aircraft can be seen, but no data is
transmitted. This mode is similar to setting a standard
transponder to the “standby” mode.
Flight ID Editing
The Enter Flight ID option allows you to edit your
broadcasted Flight ID. The Function “smart” keys at the
bottom of the screen change to arrow keys. Use the
UP/DOWN arrow keys to change the characters. Use the
LEFT/RIGHT arrow keys to move between characters. Press
the
MENU/ENTER key to save the displayed Flight ID. The
Flight ID is only sent when the Flight ID broadcast option is
56
Detailed Operation
Fli
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ht ID ICAO Address

Garmin MX20 Specifications

General

Display Type	Color LCD
Water Resistance	IPX7
GPS Receiver	12-channel
Routes	50
Category	Aviation GPS
Track Log	10, 000 points
Map Storage	Internal
Operating Temperature	-15°C to 55°C (5°F to 131°F)