Garmin GNC 420AW Installation Manual - page 22
Page 1-10
400W Series Installation Manual
Rev. E
190-00356-02
1.4.8.2 Antennas With IFR GPS Operational Limitations
The list of TSO-C144 antennas shown in Table 1-3 allow the 400W Series models to meet TSO-C146a
requirements
with
the operational limitations specified in the Limitations Section 7.1.1 of this manual.
Table 1-3. Antennas With IFR GPS Operational Limitations
Model / Description Mount Style
Conn
Type
Mfr Part
Number
Garmin Order
Number
Additional
Requirements
GA 56A,
GPS/WAAS
Antenna [3]
Screw Mount,
ARINC 743
Footprint
BNC Garmin
011-01154-00 010-10599-00
GA 56W,
GPS/WAAS
Antenna [3]
Stud Mount ,
Teardrop
Footprint [1]
BNC Garmin
011-01111-00 010-10561-01
GA 57, GPS/WAAS
and FIS Antenna
[3]
Screw Mount,
ARINC 743
Footprint
BNC
TNC
[4]
Garmin 011-01032-00
010-10604-00
Garmin AT
590-1104
N/A
A33, GPS/WAAS
Antenna
Screw Mount
TNC Aero
Antenna
AT575-9UW -TNCF-
000-05-26-NM
N/A
Garmin AT
590-1112
013-00113-00
A34, GPS/WAAS
Antenna
Screw Mount,
Teardrop
Footprint [2]
TNC
Aero
Antenna
AT575-93W-TNCF-
000-05-26-NM
013-00113-00
Operational
limitations in
Section 7.1.1
of this manual
apply.
[1] Same footprint and mounting hole pattern as GA 56.
[2] Same mounting hole pattern as GA 56, but A34 antenna has a physically larger footprint.
[3] Antenna is not compatible with SATCOM. An alternate antenna should be used for installations
equipped with SATCOM.
[4] The GPS/WAAS antenna connector is a BNC type. The XM antenna connector is a TNC type.