Installation Overview
190-01499-02 GTX 3X5 Transponder TSO Installation Manual
Rev. 9 Page 3-11
3.8 GPS Antenna Requirements
Use an antenna in table 3-8 to get the best performance with the GTX 3X5 with internal GNSS receiver. The antennas
in table 3-8 meet specifications in the document Antenna Minimum Performance Specification for Garmin’s
GPS/WAAS Receiver System.
Table 3-8 GNSS Receiver Antennas
[1] Same mounting hole pattern as GA 56, except GA 35 has a physically larger footprint.
[2] The GPS antenna connector is a TNC and the VHF connector is BNC.
[3] The GPS antenna connector is a TNC connector, the XM connector is TNC, and the VHF connector is
BNC.
Model/Description
Connector
Type
Manufacturer P/N
Garmin
Order
Number
GA 35, GPS/WAAS [1] TNC
Garmin 013-00235-( ) 013-00235-( )
Aero Antenna AT575-93G( )-TNCF-000-RG-27-NM N/A
GA 36, GPS/WAAS TNC
Garmin 013-00244-( ) 013-00244-( )
Aero Antenna AT575-126G( )-TNCF-000-RG-27-NM N/A
GA 37, GPS/WAAS/XM TNC
Garmin 013-00245-( ) 013-00245-( )
Aero Antenna AT2300-126G( )-TNCF-000-RG-27-NM N/A
A33W, WAAS Antenna TNC
Garmin 013-00261-( ) 013-00261-( )
Aero Antenna AT575-332G( )-TNCF-000-RG-27-NM N/A
GPS/VHF Antenna [2] TNC/BNC Comant CI-2580-200 N/A
GPS/VHF Antenna [2] TNC/BNC Comant CI-2728-200 N/A
GPS/XM/VHF Antenna [3] TNC/TNC/BNC Comant CI-2580-410 N/A
GPS/XM/VHF Antenna [3] TNC/TNC/BNC Comant CI-2728-410 N/A
GPS/WAAS Antenna TNC Comant CI-428-200 N/A
GPS/XM Antenna TNC/TNC Comant CI-428-410 N/A
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