Installation Overview
190-01499-02
GTX 3X5 Transponder TSO Installation Manual
Rev. 9
Page 3-10
3.7
Transponder Antenna
NOTE
For the GTX 345 some types of transponder antennas that utilize thin radiator elements are only
intended for use at 1030 and 1090 MHz. These types of antennas should be evaluated on a model-
by-model basis to determine their suitability for UAT receivers.
The GTX 3X5/3X5R must have an UHF antenna. The antennas in table 3-7 are approved for use with the
GTX 3X5/3X5R. Other antennas are permitted if they meet these specifications:
•
Standard 50 ohm vertically polarized antenna with a VSWR < 1.7:1 at 978 MHz and < 1.5:1 at 1090 MHz
•
TSO-C66( ), TSO-C74( ), or TSO-C112( ) antennas that also meet the VSWR specification
Table 3-7 Acceptable UAT/1090 Antennas
Manufacturer
P/N
Model/Description
Connector
Type
Notes
Aero Antenna
AT130-16
DME Transponder
TNC
DC Grounded
Comant
CI-100
DME Transponder
BNC
Open Circuit
CI-100-2
DME Transponder
TNC
Open Circuit
CI-105
DME Transponder
BNC
Open Circuit
CI-105-3
DME Transponder
BNC
Open Circuit
CI-105-16
DME Transponder
BNC
Open Circuit
CI-110-40-30
DME Transponder
C
Open Circuit
CI-110-41-30
DME Transponder
C
DC Grounded
CI-110-60-30
DME Transponder
C
Open Circuit
CI-110-61-30
DME Transponder
C
DC Grounded
Dayton-Granger
L10-611-( )
L-Band Blade
C
DC Grounded
Garmin
590-0052 or
013-00219-00
A-40
TNC
Open Circuit
590-0051 or
013-00174-00
A-41
TNC
DC Grounded