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GTN 6XX/7XX AML STC Installation Manual 190-01007-A3
Page 1-16 Rev. 4
1.7 GPS/WAAS Antenna Requirements
Antenna Performance is critical to GPS/SBAS operation. Table 1-10 lists antennas that meet Garmin’s
minimum performance specifications. The GTN must be installed with one of these antennas to achieve
acceptable performance. The installation of these antennas must be previously FAA-approved (i.e. field
approval) or installation must be completed via Garmin GPS/WAAS antenna AML STC SA02018SE-D.
Before starting any modifications for the GTN STC, ensure that the GPS/WAAS antenna(s) can be
installed on the aircraft via one of these methods.
Table 1-10. GPS/WAAS Antennas
Model, Description Connector Type Manufacturer Part Number
Garmin Order
Number
GA 35, GPS/WAAS [1] TNC Garmin 013-00235-( ) 013-00235-( )
GA 36, GPS/WAAS TNC Garmin 013-00244-( ) 013-00244-( )
GA 37, GPS/WAAS/XM TNC Garmin 013-00245-( ) 013-00245-( )
A33W, WAAS Antenna [5] TNC Garmin [3] 013-00261-( ) 013-00261-( )
GPS/VHF Antenna TNC/BNC [2] Comant [3] CI-2580-200 N/A
GPS/VHF Antenna TNC/BNC [2] Comant [3] CI-2728-200 N/A
GPS/XM/VHF Antenna TNC/BNC [2] Comant [3] CI-2580-410 N/A
GPS/XM/VHF Antenna TNC/TNC/BNC [4] Comant [3] CI-2728-410 N/A
GPS Antenna TNC Comant [3] CI-428-200 N/A
GPS/XM Antenna TNC/TNC Comant [3] CI-428-410 N/A
[1] Same mounting hole pattern as GA 56, but GA 35 antenna has a physically larger
footprint.
[2] The GPS/WAAS connector is a TNC type. The VHF connector is a BNC type.
[3] Installation of this antenna is not covered by the GA antenna STC SA02018SE-D
[4] The GPS/WAAS connector is a TNC type. The XM connector is a TNC type. The
VHF connector is a BNC type.
[5] Same mounting hole pattern as A33.
[6]
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