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3GOXX16A4-XTR-1-1
OM-20000156 Rev 1 December 2013
ANTENNA GUIDE
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.