Garmin GA 35, GA 36, GA 37 Installation Instructions Manual

GA 35
GA 36
GA 37
Antenna
Installation
Instructions

190-00848-00 March 2008 Revision B

This Page Intentionally Left Blank

GA 35, GA 36, and GA 37 Antenna Installation Instructions Page B
Revision B 190-00848-00

© Copyright 2007-2008

Garmin Ltd. Or its subsidiaries

All Rights Reserved

Except as expressly provided herein, no part of this manual may be reproduced, copied, transmitted,
disseminated, downloaded or stored in any storage medium, for any purpose without the express prior
written consent of Garmin. Garmin hereby grants permission to download a single copy of this manual
and of any revision to this manual onto a hard drive or other electronic storage medium to be viewed and
to print one copy of this manual or of any revision hereto, provided that such electronic or printed copy of
this manual or revision must contain the complete text of this copyright notice and provided further that
any unauthorized commercial distribution of this manual or any revision hereto is strictly prohibited.

Garmin International, Inc.

1200 E. 151

st

Street

Olathe, KS 66062 USA

Telephone: [phone]

Aviation Dealer Technical Support Line (Toll Free): 888.606.5482

www.garmin.com

Garmin (Europe) Ltd.

Liberty House

Bull Copse Road

Hounsdown Business Park

Southampton, SO40 9RB, UK

Telephone: [phone]

Garmin AT, Inc.

2345 Turner Rd., SE

Salem, OR 97302 USA

Telephone: [phone]

Revision Revision Date Description

A 7/30/2007 Initial Release
B 3/18/08 Remove TSO-C129a

Page A GA 35, GA 36, and GA 37 Antenna Installation Instructions
Revision B 190-00848-00

This Page Intentionally Left Blank

GA 35, GA 36, and GA 37 Antenna Installation Instructions Page B
Revision B 190-00848-00

INFORMATION SUBJECT TO EXPORT CONTROL LAWS

This document may contain information which is subject to the Export Administration Regulations
(“EAR”) issued by the United States Department of Commerce (15 CFR, Chapter VII, Subchapter C) and
which may not be exported, released, or disclosed to foreign nationals inside or outside of the United
States without first obtaining an export license. A violation of the EAR may be subject to a penalty of up
to 10 years imprisonment and a fine up to $1,000,000 under Section 2410 of the export Administration
Act of 1979. Include this notice with any reproduced portion of this document.

WARNING

This product, its packaging, and its components contain chemicals known to the State of
California to cause cancer, birth defects, or reproductive harm. This Notice is being
provided in accordance with California’s Proposition 65. If you have any questions or
would like additional information, please refer to our website at www.garmin.com.

NOTE

Throughout this document references made to the GA 3X shall equally apply to the
antennas list in Table 1-1

Table 1-1 except where specifically noted.

GA 35, GA 36, and GA 37 Antenna Installation Instructions Page i
190-00848-00 Revision B

TABLE OF CONTENTS

1.

GENERAL DESCRIPTION .....................................................................................................1-1

1.1 Introduction......................................................................................................................1-1

1.2 Equipment Description.....................................................................................................1-1

1.3 Technical Specifications..................................................................................................1-1

1.3.1 Antenna Weight..........................................................................................................1-1

1.3.2 GPS/WAAS Electrical Specifications (GA 35, GA 36 and GA 37) .............................1-2

1.3.3 XM Electrical Specifications (GA 37 Only).................................................................1-2

1.3.4 Environmental Specifications.....................................................................................1-2

1.4 Certification......................................................................................................................1-2

1.4.1 GA 35.........................................................................................................................1-2

1.4.2 GA 36.........................................................................................................................1-2

1.4.3 GA 37.........................................................................................................................1-2

1.5 Limited Warranty..............................................................................................................1-3

2. INSTALLATION....................................................................................................................2-1

2.1 Introduction......................................................................................................................2-1

2.2 Antenna Mounting Location.............................................................................................2-1

2.3 Antenna Doubler..............................................................................................................2-4

2.4 Antenna Grounding..........................................................................................................2-4

2.5 Antenna Installation.........................................................................................................2-4

2.6 Installation Approval ........................................................................................................2-5

2.6.1 GA 35, GA 36, and GA 37..........................................................................................2-5

3. CONTINUED AIRWORTHINESS .............................................................................................3-1

APPENDIX A INSTALLATION DRAWINGS..................................................................................... A-1

LIST OF TABLES

Table 1-1. Antenna Part Numbers............................................................................................1-1

Table 1-2. Antenna Weight.......................................................................................................1-1

Table 1-3. GPS/WAAS Electrical Specifications.......................................................................1-2

Table 1-4. XM Antenna Specifications......................................................................................1-2

Table 1-5. Part Numbers/Drawing Numbers.............................................................................1-2

Figure A-1. GA 35 Antenna Installation Drawing.....................................................................A-1

Figure A-2. GA 36 Antenna Installation Drawing.....................................................................A-2

Figure A-3. GA 37 Antenna Installation Drawing.....................................................................A-3

Page ii GA 35, GA 36, and GA 37 Antenna Installation Instructions
Revision B 190-00848-00

LIST OF FIGURES

GA 3X Antenna Installation Instructions

1. General Description

Careful planning and consideration of the following guidelines are required to achieve the desired
performance and reliability from the GA 3X Series antennas.

1.1 Introduction

This manual describes the installation of the GA 3X Series antennas. It is intended for use by persons
certified by the Federal Aviation Administration (FAA) to install avionics equipment. This installation
manual applies to the GA 3X antennas listed in the following table.

Table 1-1. Antenna Part Numbers

Item Description

GA 35 GPS/WAAS 013-00235-00 AT575-93GW-TNCF-000-RG-

GA 36 GPS/WAAS 013-00244-00 AT575-126GW-TNCF-000-RG-

GA 37 GPS/WAAS

+ XM

Garmin Part

Number

013-00245-00 AT2300-126GW-TNCF-000-RG-

Aero Antenna Part Number Footprint

27-NM

27-NM

27-NM

Teardrop AT575-93G

ARINC 743 AT575-126G

ARINC 743 AT2300-126G

Aero Antenna

Installation

Dwg. No.

This manual does not include installation of the antenna coax cable or troubleshooting information. Refer
to the receiving equipment installation manual for antenna coax installation considerations and
troubleshooting information.

1.2 Equipment Description

The GA 3X Series antennas includes GPS/WAAS antennas and GPS/WAAS with XM combination
antenna. The coax cable interface to the receiving equipment provides both power to the antenna preamp
from the receiving equipment and signal back to the receiving equipment. For receiving equipment
compatibility, refer to the receiving equipment installation manual.

1.3 Technical Specifications

1.3.1 Antenna Weight

Table 1-2. Antenna Weight

Item Weight

GA 35 0.47 lbs (0.21 kg)
GA 36 0.47 lbs (0.21 kg)
GA 37 0.50 lbs (0.23 kg)

GA 35, GA 36, and GA 37 Antenna Installation Instructions Page 1-1
190-00848-00 Revision B

1.3.2 GPS/WAAS Electrical Specifications (GA 35, GA 36 and GA 37)

Table 1-3. GPS/WAAS Electrical Specifications

Characteristics Specifications

Frequency Range 1575 + 10 MHz

27 +

Gain
Noise Figure 2.5 dB max over temperature

Nominal Output Impedance 50 ohms
Supply Voltage 4.5 VDC + 0.5 VDC
Supply Current 60 mA max
Output Connector TNCF

0.5 dB @ +25°C nominal and + 2.0 dB over temperature
with respect to nominal

1.3.3 XM Electrical Specifications (GA 37 Only)

Table 1-4. XM Antenna Specifications

Characteristics Specifications

Frequency Range 2332.5 to 2345 MHz
Gain 24 ± 2 dB
Noise Figure 1.5 dB max
Nominal Output Impedance 50 ohms
Supply Voltage 4.5 VDC + 0.5 VDC
Supply Current 55 mA
Output Connector TNCF

1.3.4 Environmental Specifications

It is the responsibility of the installing agency to obtain the latest revisions of the GA 3X Environmental
Qualifications. The Environmental Categories are available on the Aero Antenna Drawing. To obtain a
copy of these drawings, see the ‘Dealers Only’ portion of the Garmin website, www.garmin.com.

Table 1-5. Part Numbers/Drawing Numbers

Item Garmin Part Number Aero Antenna Environmental Qualification Drawing Number

GA 35 013-00235-00 TSO575-93G
GA 36 013-00244-00 TSO575-93G
GA 37 013-00245-00 TSO2300-126G

1.4 Certification

1.4.1 GA 35

The GA 35 is compliant with TSO C144.

1.4.2 GA 36

The GA 36 is compliant with TSO C144.

1.4.3 GA 37

The GPS/WAAS function of the GA 37 is compliant to TSO C144. The XM function of the GA 37 is
compatible with the Garmin GDL 69 and GDL 69A.

Page 1-2 GA 35, GA 36, and GA 37 Antenna Installation Instructions
Revision B 190-00848-00