GAJT-710MS Product SheetGAJT-710MS
Enhanced single enclosure GPS
Anti‑Jam Technology (GAJT) formarine applications
Jamming and interference are constant threats
Jamming and interference, whether intentional or unintentional, can seriously
degrade GNSS position, navigation and timing (PNT) availability—even to the pointof total solution denial. Jammers create excessive noise, overpowering the low
power GNSS signals and saturating the electronics in a GNSS receiver front end.
Methods are needed to suppress this interference so your GNSS receiver continues
to operate.

Benefits• Commercial off-the-shelf (COTS)• Low cost anti-jam protection for ships
and boats• Easy to integrate, ideal for retrofitting

Enhanced functionality, same battle-proven small formfactor
The GAJT-710MS is the next evolution of battle-proven anti-jam technology for• Anti-jam protection in dynamic
multi‑jammer scenarios

marine platforms from Hexagon | NovAtel. It offers direction-finding functionality• Compatible with legacy and modern

to support enhanced situational awareness and a new silent mode feature that

GNSS receivers, including M-Codereduces the thermal signature. It also has enhanced GNSS tracking performance.
All these improvements are achieved while maintaining the same form and fit of theprevious generation product.

How it works
GAJT-710MS mitigates interference by creating nulls in the antenna gain pattern in• Provides situational awareness• Reduced thermal signature

Featuresthe direction of jammers, providing significant anti-jam protection even in dynamic
multi‑jammer scenarios. The output is a protected standard Radio Frequency (RF)signal, free from jamming and suitable for input to modern and legacy GNSS receivers.

Leading-edge technology
The commercial off-the-shelf (COTS) system uses NovAtel’s seven element antenna
array to receive GNSS signals in the L1 and L2 bands. Interference mitigation isachieved by applying proprietary digital null forming algorithms to the signals, creating
dynamic nulls to give protection against narrowband and broadband interference
sources. The unit is comprised of Radio Frequency (RF) front ends and null forming
electronics. Integration to your GNSS receiver is seamless; DC power supply and data

• Affordable protection for GNSS
position, velocity and time• 40 dB of interference suppression• Single enclosure system• Simultaneous GPS L1/L2, QZSS L1/L2,SBAS L1 and Galileo E1 protection• Supports M-Code on GPS L1 & L2

output are via separate connectors for which optional cables can be provided.

• Adaptive digital nulling

Protects GNSS navigation and precise timing receivers• Jammer direction-finding

GAJT-710MS protects GPS L1/L2, QZSS L1/L2, SBAS L1 and Galileo E1 signals. The• Silent mode capability

wide bandwidth of the GAJT-710MS ensures future compatibility with M-Code GPS.

GAJT-710MS Product Sheet
Performance

EnvironmentalOther GAJT Products

GNSS Signals

Temperature

GAJT-710ML

L1 Band1575.42 MHz ±12 MHz
GPS L1, Galileo E1, QZSS L1, SBAS L1

MIL-STD-810G(CH1), 501.6
Operating 	-40°C to +71°C
Storage 	-55°C to +85°C

L2 Band
GPS L2, QZSS L2

1227.6 MHz ±12 MHz

Humidity

MIL-STD-810G(CH1), 507.6, Proc. II

Simultaneous L1/E1 and L2

AltitudeOperatingStorage

MIL-STD-810G(CH1), 500.6
3,600 m/12,000’
12,000 m/40,000’

Interference suppression
40 dB (typical)
Number of simultaneous nulling directions
6Solar Radiation

MIL-STD-810G(CH1), 505.6

Corrosion

MIL-STD-810G(CH1), 509.6
MIL-STD-810G(CH1), 518.2
MIL-STD-810G(CH1), 504.2

Water

MIL-STD-810G(CH1), 512.6
MIL-STD-810G(CH1), 506.6
IEC 60529 IPX6
IEC 60529 IPX7

Sand and Dust

MIL-STD-810G(CH1), 510.6
IEC 60529 IP6X

Vibration

MIL-STD-810G(CH1), 514.7

Shock

MIL-STD-810G(CH1), 516.7

Drop

IEC 60068-2-31 Ec, Proc 1, 50 cm

Interference Rejection

Capabilities• Jammer direction-finding (Situational
Awareness)• Silent mode (for reduced thermalsignature)

Controlled Reception Pattern
Antenna (CRPA)
Number of elements
Noise figure (typical)
LNA gain
VSWR
RF output

73 dB
30 dB
≤2.0:150 Ω TNCConnectors
PowerRFData

MIL-C-26482, Series 2
TNC (Female)
MIL-DTL-38999, Series 3Dimensions
289 mm diametre x 120 mm height
Weight7.5 kgPower
Power consumption
Input voltage

25 W+10 to +33 VDC

GAJT-410ML• Compact enclosure system for land andfixed applications• 4-element antenna array• Direction-finding and jammer status• Available in Olive Drab or Desert Tan• Also available in white (GAJT-410MS)
GAJT-AE-NCompliance
FCC, ISED, CE

Accessories

Physical and Electrical• Single enclosure system for land and fixedapplications• 7-element antenna array• Easy to integrate, ideal for retrofitting• 5 m unterminated GAJT-710 vehicle power
cable (01018776)• GAJT-710 data cable (01019845)

Export Approvals
Canadian Controlled Goods• Suitable for smaller platforms including
UAVs• Antenna electronics for 4-element
antenna arrays• Works with most 4-element antenna arrays(supplied separately)• Available as a card-only variant(GAJT‑AE‑R) for space constrainedplatforms.
4-Element Antenna Array
A 4-element antenna array allows gain
pattern shapes to be changed in response tointerference. Provides 3 independent nulls.

Contact Hexagon | NovAtel
sales.nov.ap@hexagon.com 1-800-NOVATEL (U.S. and Canada) or 403-295-4900 | China: 0086-21-68882300 | Europe: 44-1993-848-736 | SE Asia and Australia: 61-400-883-601.
For the most recent details of this product: novatel.com
GAJT and NovAtel are trademarks of NovAtel, Inc., entities within the Hexagon Autonomy & Positioning division, their affiliated entities, and/or their licensors. All other trademarks are properties of theirrespective owners.
©2021 NovAtel Inc. All rights reserved. NovAtel is part of Hexagon. NovAtel makes no representation or warranty regarding the accuracy of the information in this publication. This document gives only a generaldescription of the product(s) or service(s) offered by NovAtel, and, except where expressly provided otherwise, shall not form part of any contract. Such information, the products and conditions of supply aresubject to change without notice.

D28285 Version 3 | 17 September 2021 | Printed in Canada