Novatel 3GOXX16A4-XTR-1-1 User Manual
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.
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.
User-supplied o-ring grease can hold the o-ring in the groove during installation.
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3. Use the four supplied mounting screws to attach the antenna to the mounting surface. The o-ring compresses and creates a seal between the surface and the antenna.
NovAtel recommends thread-locker (not included) on the mounting screws.
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1
3 4
Ref. # Description
1 Antenna
2 Countersink screws
3 Mounting surface
4 O-ring
5 Pre-drilled mounting holes
4. Remove the dust cap from the antenna’s TNC connector.
5. Attach the coaxial cable’s male TNC connector to the antenna’s TNC connector.
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Ref.# Description
1 Mounted antenna
2 Mounting surface
3 TNC connector
4 Coaxial cable
6. Attach the other end of the coaxial cable to the antenna input port on the receiving device. The
receiving device must be equipped to provide power as detailed in the SPECIFICATIONS section of
this guide. All NovAtel GPS receivers provide the necessary power through the antenna RF
connectors.
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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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