2-7190-01007-03 Rev. C
GTN 725/750 Pilot’s Guide
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Charts
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
NOTE: Changing the flight ID while in anonymous mode wouldn't actually
change the flight ID because a randomized ID is being broadcast. If the
ANONYMOUS key is armed, change the squawk code to the VFR code to
activate Anonymous mode.
2.1.11 Extended Squitter Transmission
When “Enable ES” is selected, the GTX 33/330 turns on Extended Squitter
(ES) transmissions. Extended Squitter technology improves situational awareness
and flight safety. With Extended Squitter capabilities, position, velocity, and
heading information are automatically transmitted to other aircraft and ground
stations. The current air traffic control system depends on a transponder request
for pertinent aircraft information and does not include 3D position. Extended
Squitter provides automatic transmission of aircraft information without a
request. “Enable ES” should be active for normal operations.
VFR Squawk
Code (1200) Key
Squawk Code
Window
Squawk Code
Backspace Key
Enter Key
Numeric Keypad
Green Bar Indicates
"Active" Condition
Transponder
Mode Keys
Touch To Enter
Flight ID
Touch To Toggle
Extended Squitter
Figure 2-12 Transponder Control Panel With Extended Squitter Capability
1. While viewing the Transponder (XPDR) page, touch the Enable
ES key to toggle Extended Squitter Off and On.
2. Touch the Flight ID key and use the keypad to select a Flight
ID and then touch Enter.
3. After selecting a Flight ID, the selected value will be shown in
the Flight ID key.
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