Garmin GDL 82 Installation Manual

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Garmin GDL 82 Installation Manual Manual pdf 27 page image

Installation Planning and Considerations190-01810-00 GDL 82 TSO Installation ManualRev. 5 Page 4-44.4 Antenna Requirements4.4.1 L-Band AntennaNOTECertain types of transponder antennas with thin radiator elements are intended for use at 1030 and1090 MHz. Evaluate these antennas on a model-by-model basis to determine their suitability as UATdata link antennas.The GDL 82 requires the existing L-Band Ultra-High Frequency (UHF) antenna(s) meet the following 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.The antenna location should be:1. Away from major protrusions.2. As far away as practical from openings that can affect the radiation pattern (e.g., landing gear doors, accessdoors, etc.).3. At least 20 inches from any other transponder, TAS/TCAS, DME, or 1030/1090 MHz antennas.Table 4-2 Acceptable L-Band Antennas[1] Not recommended for new installations.MANUFACTURER PART NUMBER MODEL/DESCRIPTIONCONNECTORTYPE NOTESAero Antenna AT130-16 DME Transponder TNC DC GroundedComantCI-100 [1] DME Transponder BNC Open CircuitCI-100-2 [1] DME Transponder TNC Open CircuitCI-105 [1] DME Transponder BNC Open CircuitCI-105-3 [1] DME Transponder BNC Open CircuitCI-105-16 [1] DME Transponder BNC Open CircuitCI-110-40-30 DME Transponder C Open CircuitCI-110-41-30 DME Transponder C DC GroundedCI-110-60-30 DME Transponder C Open CircuitCI-110-61-30 DME Transponder C DC GroundedDayton-Granger L10-611-( ) L-Band Blade Varies DC GroundedGarmin590-0052 or013-00219-00 [1] A-40 TNC Open Circuit590-0051 or013-00174-00 A-41 TNC DC Grounded