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G3X Installation Manual – GDU 37X Page 2-3
190-01115-01 Revision A
2.2.4 Antennas
Table 2-4 lists Garmin and non-Garmin antennas currently supported by the GDU 37X. Refer to Section
6 for Garmin antenna installation information. For non-Garmin antennas, follow the manufacturer’s
installation instructions.
NOTE
Only a single GPS antenna is required for installations using more than
one GDU 37X unit, as the GDU 37X will “share” the GPS information
with all GDU 37X units.
Table 2-4. GDU 37X Supported Antennas
Model Mount Style
Conn
Type
Antenna
Type
Mfr
Antenna Part
Number
Garmin Order
Number
Comant
2480-201
VHF/GPS
[1]
Screw
Mount,
Teardrop
Footprint
BNC
TNC
VHF
COM,
GPS
Comant CI 2480-201 N/A
Comant
420-10 XM
only
Antenna
Screw
Mount,
ARINC 743
Footprint
TNC XM Comant CI 420-10 N/A
GA 26C
Suction Cup,
Magnetic or
Flange Mt
BNC GPS Garmin 011-00149-04 010-10052-04
GA 26XM
Ground
Plane Mt
TNC XM Garmin 013-00268-10 010-11373-00
GA 55 Stud Mount TNC XM Garmin 011-01033-00 010-10600-01
GA 55A ARINC 743 TNC XM Garmin 011-01153-00 010-10598-00
GA 56 Stud Mount BNC GPS Garmin 011-00134-00 010-10040-01
GA 57X
[2]
Screw
Mount,
ARINC 743
Footprint
BNC
TNC
GPS
XM
Garmin 011-01032-10 010-11370-10
[1] The GPS antenna connector is TNC type. The VHF COM antenna connector is BNC type.
NOTE
The GPS antenna should provide a gain of 16 to 25dB, and requires a
4.5V to 5V supply voltage that can provide 50mA max.
2.3 Environmental Specifications
The GDU 37X has an Operating Temperature Range of -20°C to +60°C.