Gps Antenna - Garmin GTX 3X5 Installation Manual

3.4.4

GPS Antenna

A GPS antenna is necessary for the GTX 335 and GTX 345 with the internal GPS option. Refer to
section 3.8 for information about antenna selection and part numbers.
GA 35 Antenna
The antenna includes four 8-32 UNC-2A x 1.00" SS 303 mounting screws and one O-ring.
It can be necessary to use an antenna doubler. Refer to applicable antenna installation data.
Use four #8 washers and four #8 self-locking to attach the antenna. Applicable nut plates can be attached to
the doubler. Torque the four supplied 8-32 stainless steel screws 12-15 in-lbs. Apply torque equally across
all mounting screws to avoid deformation of the mounting area. Use a TNC plug to connect the GPS
antenna coax cable.
GA 36 Antenna
The antenna includes four 10-32 UNF-2A x 1.00" SS 303 mounting screws and one O-ring.
It can be necessary to use an antenna doubler. Refer to applicable antenna installation data.
Attach the antenna with four #10 washers and four #10 self-locking nuts. Applicable nut plates can be
attached to the doubler. Torque the four supplied 10-32 stainless steel screws 20-25 in-lbs. Apply torque
equally across all mounting screws to avoid deformation of the mounting area.
Use a TNC plug to connect the GPS antenna coax cable.
GA 37 Antenna
The antenna includes four 10-32 UNF-2A x 1.00" SS 303 mounting screws and one O-ring.
It can be necessary to use an antenna doubler. Refer to applicable antenna installation data.
Attach the antenna with four #10 washers and four #10 self-locking nuts.. Applicable nut plates can be
attached to the doubler. Torque the four supplied 10-32 stainless steel screws 20-25 in-lbs. Apply torque
equally across all mounting screws to avoid deformation of the mounting area.
Use a TNC plug to connect the GPS antenna coax cable.
A33W Antenna
The antenna includes four 6-32 UNC-2A x 1.00" SS 303 mounting screws and one O-ring.
It can be necessary to use an antenna doubler. Refer to applicable antenna installation data.
Attach the antenna with four #6 washers and four self-locking nuts. Applicable nut plates can be attached
to the doubler. Torque the four supplied 6-32 stainless steel screws 3-5 in-lbs. Apply torque equally across
all mounting screws to avoid deformation of the mounting area.
Use a TNC plug to connect the GPS antenna coax cable.
190-01499-02 GTX 3X5 Transponder TSO Installation Manual
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