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GNSS-303L
GM-14915164
Rev 2
March 2018
USER GUIDE
The GNSS-303L antenna is designed for airborne use, but it will operate in any mobile application.
The GNSS-303L is an active GNSS antenna, 89.6 mm (3.53”) in diameter, and designed to receive GPS,
GLONASS, Galileo, BeiDou, NavIC and L-Band signals. Its mechanical configuration is a spherical radius
molded radome which provides enhanced protection against rain and ice. Its connector offset is based on
NovAtel’s GPS-511 antenna. The GNSS-303L antenna includes the following:
• internal 26 dB low noise amplifier
• bias voltage from 3.8 – 6.0 VDC for operation
• band pass filtering
• DC bias provided through the coaxial connector
NovAtel offers optional coaxial cables of various lengths and models for interconnecting between the
antenna and NovAtel GNSS receivers.
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 3.8 to 6.0 VDC to
the antenna is required to set up the GNSS-303L. (NovAtel GNSS 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 flow over a single coaxial cable that is connected to the
antenna's TNC female connector.
The antenna can be attached to a surface by means of a square, 4 bolt, 1.9 inch space mounting pattern
as shown in the
Mechanical Drawings
section of this guide.
The integrator of this antenna is responsible for ensuring antenna installation meets all the
overall integrated system requirements.
Refer to Section 307 of
www.faa.gov/documentLibrary/media/Advisory_Circular/
AC%2043.13-2B.pdf
for information about antenna bonding in aircraft applications.
