Garmin GDL 69/69A Installation Manual - Page 14

General Description - gdl 69a noise

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General Description 1.8.1 General Antenna Requirements Garmin recommends the Garmin XM antenna shown in the Table 1-5 below. These antennas are approved with the certification of the GDL 69/69A. However, any equivalent XM antenna with specifications listed in Table 1-6 should work with the GDL 69/69A. Antennas must provide protection from direct lightning strikes. This STC does not support installations of equivalent antennas. Table 1-5. XM Antennas Model GA 55 GA 55A GA 57 Part Number 011-01033-00 011-01153-00 011-01032-00 Description XM Antenna XM Antenna GPS/WAAS + XM Antenna Mounting Configuration Stud mount Tear-drop form factor Thru-mount (ARINC 743 style mount) Thru-mount (ARINC 743 style mount) Table 1-6. XM Satellite Radio Antenna Minimum Requirements Frequency Range Gain (Typical) Noise Figure Nominal Output Impedance Supply Voltage Supply Current (maximum) Operating Temperature Gain 2332.5 to 2345 MHz 24 dB ± 1 dB**

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General Description
Page 1-6
GDL 69/69A Installation Manual
Revision E
190-00355-02
1.8.1
General Antenna Requirements
Garmin recommends the Garmin XM antenna shown in the Table 1-5 below. These antennas are
approved with the certification of the GDL 69/69A. However, any equivalent XM antenna with
specifications listed in Table 1-6 should work with the GDL 69/69A. Antennas must provide protection
from direct lightning strikes. This STC does not support installations of equivalent antennas.
Table 1-5.
XM Antennas
Model
Part Number
Description
Mounting Configuration
GA 55
011-01033-00
XM Antenna
Stud mount Tear-drop form factor
GA 55A
011-01153-00
XM Antenna
Thru-mount (ARINC 743 style mount)
GA 57
011-01032-00
GPS/WAAS + XM Antenna
Thru-mount (ARINC 743 style mount)
Table 1-6.
XM Satellite Radio Antenna Minimum Requirements
Frequency Range
2332.5 to 2345 MHz
Gain (Typical)
24 dB ± 1 dB**
Noise Figure
<1.2 dB
Nominal Output Impedance
50 ohms
Supply Voltage
3.6 to 5.5 VDC
Supply Current (maximum)
55 mA
Operating Temperature Gain
-50 to +85°C
** For each 1 dB gain over 24 dB, add 1 dB of attenuation into the antenna cable path between
the antenna and the GDL 69/69A.
Table 1-7.
GA 55, GA 55A, GA 57 XM Antenna Specifications
Frequency Range
2332.5 to 2345 MHz
Gain
25 ± 2 dB
Noise Figure
<1.2 dB
Nominal Output Impedance
50 ohms
Supply Voltage
3.6 to 5.5 VDC
Supply Current
40 to 55 mA
Operating Temperature Range
-50 to +85 ° C
Output Connector
TNC