3GOXX16A4-XTR-1-1
ANTENNA GUIDE
OM-20000156
Rev 1
December 2013
The 3GOXX16A4-XTR-1-1 antenna is designed for airborne use, but works in any mobile application.
The 3GOXX16A4-XTR-1-1 is an active GPS antenna, 88.9 mm (3.5-inches) in diameter and operates at
the GPS L1 frequency of 1575.42 MHz and the GPS L2 frequency of 1227.60 MHz. The antenna is a
spherical radius molded radome that provides enhanced protection against rain and ice.
The antenna includes the following:
•
•
•
•
internal 33 dB low noise amplifier
bias voltage from 2.5-24 V DC for operation
band pass filtering
DC bias provided through the coaxial connector
NovAtel offers optional coaxial cables of various lengths to connect the antenna and NovAtel GNSS
receivers.
The 3GOXX16A4-XTR-1-1 is aircraft certified for navigation. This guide provides the basic information you
need to install and begin using your new antenna.
ADDITIONAL EQUIPMENT REQUIRED
•
A device with an antenna input port that both receives the RF signal and provides 2.5 - 24.0 VDC
to the antenna is required for the 3GOXX16A4-XTR-1-1. NovAtel GPS receivers provide the
necessary power through their antenna RF connectors.
•
Coaxial cable with a male TNC connector
INSTALLING THE ANTENNA
Both the input DC power and the output RF signal use a single coaxial cable connected to the unit's TNC
female connector.
The antenna can be attached to a surface with a square, four bolt, 1.9-inch space mounting pattern as
shown in the Mechanical Drawings section of this guide. Four screws pass through the antenna housing.
To install the antenna:
1. Install the supplied o-ring into the groove on the antenna base.
User-supplied o-ring grease can hold the o-ring in the groove during installation.
2. Pre-drill and tap the mounting holes and drill the connector clearance hole on the mounting surface.
See the Mechanical Drawings section for mounting pattern details.
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This graphic provides examples of where the antenna may be located on an aircraft or vehicle (not to
scale).
ANTENNA CARE
The 3GOXX16A4-XTR-1-1 is designed to withstand the elements, including rain, snow and dust. However,
to ensure that the antenna performs optimally, keep the radome clean and brush off any ice or snow. In
addition, ensure the TNC connector remains clean and dry and replace the dust cap when a cable is not
connected.
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SPECIFICATIONS
RF
Band
L1
L2
3 dB pass band (typical)
Out-of-band rejection (dB)
Antenna gain (dBic)
1575.42 ±15 MHz
1227.60 ±15 MHz
-40 dB (±50 MHz)
-41 dB (±50 MHz)
Free
16-inch 4-foot
Free
16-inch 4-foot
Space ground
plane
ground
plane
Space ground
plane
ground
plane
+4.7
-1.8
-0.3
+1.4
+0.4
-3.2
-1.0
+0.9
+3.5
-2.0
+3.3
-3.8
-2.0
-0.5
+1.5
-4.0
-2.0
0.0
+4.9
-3.6
-0.1
-1.8
90° zenith
10° elevation
20° elevation
30° elevation
60° – 90° elevation
Beamwidth (dB)
LNA gain
+0.8
+1.8
>3.9 +3.4/+0.4 >2.8
>2.7 +2.4/+1.5 >3.0
114°
118°
139°
106°
111°
75°
33 dB
35 dB
Polarization
Right-hand circular
3.0 dB
Noise figure (typical)
Nominal impedance
VSWR
50
1.5 : 1
POWER
2.5 - 24.0 VDC
Input voltage
Current
50 mA
PHYSICAL
Radome
diameter x height
8.89 cm (3.5 inches) x 1.847 cm (0.727 inches)
Weight
191 g (6.802 ounces)
ENVIRONMENTAL
21,336 m (70,000 ft.)
Maximum altitude
Operating / storage temper-
ature
-55° C to +85° C (-67° F to +185° F)
Vibration
>30 G
Designed to meet these
standards
FAA TSO-C144, DO-160D, DO-228, MIL-C-5541,
MIL-E-5400, MIL-I-45208A, MIL-STD-810 and SAE J1455
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ELEVATION GAIN PATTERNS
L1 GPS
Max= 4.7
0
L2 GPS
Max= 3.3
0
0
0
-10
-20
-30
-40
-10
-20
-30
-40
-90
90
-90
90
180
180
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MECHANICAL DRAWINGS
Dimensions are in inches, followed by [mm]
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PHASE CENTRE
Please refer to the Mechanical Drawings before reading this section.
HEIGHT = Vertical phase centre offset from antenna reference point or antenna reference plane (ARP),
see the MECHANICAL DRAWINGS section of this guide.
For relative offset numbers and phase centre variation (PCV) tables, please visit the U.S. National
Please check our website for updates to this manual at www.novatel.com/Downloads/docupdates.html and
the websites mentioned above.
If you need any further advice on this matter, please visit our website at www.novatel.com. Other methods
of contacting Customer Service can be found on the last panel of this guide.
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WARRANTY POLICY
NovAtel Inc. warrants that its Global Positioning System (GPS) products are free from defects in materials and workmanship, subject to the conditions
set forth below, for the following periods of time:
GPSAntenna™ Modules:
Cables and Accessories:
One (1) Year from date of sale
Ninety (90) Days from date of sale
Date of sale shall mean the date of the invoice to the original customer for the product. NovAtel's responsibility respecting this warranty is limited solely
to product repair at an authorized NovAtel location only. Determination of repair will be made by NovAtel personnel or by technical personnel expressly
authorized by NovAtel for this purpose.
The foregoing warranties do not extend to
(i) nonconformities, defects or errors in the products due to accident, abuse, misuse or negligent use of the products or use in other than a normal and
customary manner, environmental conditions not conforming to NovAtel’s specifications, or failure to follow prescribed installation, operating and mainte-
nance procedures, (ii) defects, errors or nonconformities in the products due to modifications, alterations, additions or changes not made in accordance
with NovAtel’s specifications or authorized by NovAtel, (iii) normal wear and tear, (iv) damage cause by force of nature or act of any third person, (v) ship-
ping damage; or (vi)service or repair of product by the dealer without prior written consent from NovAtel.
In addition, the foregoing warranties shall not apply to products designated by NovAtel as beta site test samples, experimental, developmental, prepro-
duction, sample, incomplete or out of specification products or to returned products if the original identification marks have been removed or altered.
The warranties and remedies are exclusive and all other warranties, express or implied, written or oral, including the implied warranties of merchant-
ability or fitness for any particular purpose are excluded.
NovAtel shall not be liable for any loss, damage or expense arising directly or indirectly out of the purchase, installation, operation, use or licensing or
products or services. In no event shall NovAtel be liable for special, indirect, incidental or consequential damages of any kind or nature due to any cause.
There are no user-serviceable parts in the GPSAntenna and no maintenance is required. If the unit is faulty, replace with another unit and return the
faulty unit to NovAtel Inc. You must obtain a RETURN MATERIAL AUTHORIZATION (RMA) number by calling NovAtel Customer Service at 1-800-
NOVATEL (U.S. and Canada only) or 403-295-4500 before shipping any product to NovAtel or a dealer. Once you have obtained an RMA number, you
will be advised of proper shipping procedures to return any defective product. When returning any product to NovAtel, please return the defective
product in the original packaging to avoid damage.
**
Before shipping any material to NovAtel or our Dealer, obtain a Return Material Authorization (RMA) number from the point of purchase. You
may also visit our web site (http://www.novatel.com) and select Support | Repair Request from the side menu.
Questions or Comments
If you have any questions or comments, please contact NovAtel Customer Support using one of methods
provided below.
E-mail: [email protected]
Web: www.novatel.com
Phone: 1-800-NOVATEL (International) or 403-295-4500 (U.S. & Canada)
Fax: 403-295-4501
© Copyright 2013 NovAtel Inc. All rights reserved.
Unpublished rights reserved under international copyright laws.
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