GAJT-410MS Product SheetGAJT-410MS
GPS Anti-Jam Technology (GAJT) formarine vessels
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. These threats to assured PNT place your vessel, crew andcargo at risk. With unreliable PNT, your operations are interrupted, cybersecurity isBenefits

threatened and you may navigate into unsafe waters.

• Commercial off-the-shelf (COTS)

Jammers create excessive noise, overpowering the low power GNSS signals andsaturating the electronics in a GNSS receiver front end. Methods are needed tosuppress this interference so your GNSS receiver continues to operate.

• Low cost anti-jam protection
designed for smaller platforms

Battle-proven in smaller and lighter enclosure• Easy to integrate

The GAJT-410MS is a new design that builds on our achievements in battle-provenanti-jam technology in a smaller marine enclosure. It combines antenna array andnull forming electronics into an enclosure suitable for installation on a wide rangeof marine vessels, including military, civilian and autonomous, as well as fixedinstallations in ports and harbors.

• High performance anti‑jam protection

Easy to integrate
The GAJT-410MS is a low size, weight and power (SWaP) enclosure compatible withlegacy and modern GPS/GNSS receivers. It is connected with a Radio Frequency(RF) cable which reduces the need for multiple cables or the need for costly
platform modifications. This simplified integration is enabled by the Power Injector
Data Converter (PIDC) inside the vessel, which provides clean power and data anddelivers the protected GNSS signal back to the receiver. The PIDC can be supplied in
an enclosure and is available to license for installation into third-party equipment.

Situation awareness
An understanding of your RF environment is critical to fully protect and assure
your PNT. The GAJT-410MS PIDC provides jammer status and direction-finding foradvanced situation awareness so you can identify and locate sources of jamming.

How it works
GAJT-410MS mitigates interference by creating nulls in the antenna gain pattern inthe direction of jammers, providing significant anti-jam protection even in dynamic
multi‑jammer scenarios. The output of the GAJT-410MS is a protected, standard RFfeed, free from jamming and suitable for input to modern and legacy GNSS receivers.

Protects GNSS navigation and precise timing receivers
GAJT-410MS protects GPS L1/L2, QZSS L1/L2, SBAS L1 and Galileo E1 signals. The
wide bandwidth of GAJT ensures compatibility with M-Code GPS.

in dynamic multi‑jammer scenarios• Compatible with legacy and modern
GNSS receivers, including M-Code• Provides situation awarenessFeatures• Affordable protection for GNSS
position, velocity and time
• 40 dB of interference suppression• Simultaneous GPS L1/L2, QZSS L1/L2,
SBAS L1 and Galileo E1 protection• Supports M-Code on GPS L1 & L2
• Adaptive digital nulling• Jammer direction-finding

GAJT-410MS Product Sheet
Performance

Environmental

GNSS Signals

Temperature

GPS L1, QZSS L1, SBAS L1 1575.42 MHz ±12 MHz
GPS L2, QZSS L2
1227.6 MHz ±12 MHz
Galileo E1
1575.42 MHz ±12 MHz

OperatingStorage-40°C to +71°C-55°C to +85°C

Humidity

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

AltitudeOperatingStorage

MIL-STD-810G(CH1), 500.6
4570 m / 15,000’
12,000 m/ 40,000’

Corrosion

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

Interference Rejection
Simultaneous L1/E1 and L2
Wideband suppression
40 dB (typical)
Number of simultaneous nulling directions
3

GAJT-710 series

Antenna Array
Built in 4 Element CRPA

GAJT-410 CRPA Ports
1 x SMA (50 Ω) female

1 x ODU 12 pin female
1 x SMA (50 Ω) female
1 x SMA (50 Ω) female

Data/PowerRF
RF/Data/Power

Physical and ElectricalPower (system)
Power Consumption
Input Voltage

MIL-STD-810G(CH1), 516.7
IEC 60068-2-27 Ea

Water

MIL-STD-810G(CH1), 512.6
IEC 60529 IPX9K
IEC 60529 IPX7

Sand & Dust

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

Solar Radiation

MIL-STD-810G(CH1), 505.6

MIL-STD-461G

Compliance
140 diameter × 95 mm
1.7 kgGAJT-410MS Hardware Color Options

FCC, ISED, CE

Accessories• Combined data and power cable• NATO Mount Adapter• Pole Mount Adapter• White
PIDC
WeightShockElectromagnetic Compatibility

WeightDimensions

MIL-STD-810G(CH1), 514.7

18 W (typ)+10 to +32 VDC

GAJT-410MS CRPA
Dimensions

Vibration

RF/Data/PowerPIDC PortsGAJT Products

85.5 W × 85 L × 31.5 H mm
450 g

• Single enclosure system• 7-element antenna array• Easy to integrate, ideal for retrofitting• GAJT-710ML
Land vehicles and fixed installations• GAJT-710MS
Warships and other marine vessels andcoastal applications
GAJT-AE-N• Suitable for smaller platforms including
UAVs• Antenna electronics for 4-element
antenna array• Works with most 4-element antenna arrays(supplied separately)
4-Element Antenna Array
A 4-element antenna array allows gainpattern shapes to be changed in response tointerference. Provides 3 independent nulls.

Export Approvals
Canadian Controlled Goods

Contact Hexagon | NovAtel
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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.

D28592 Version 2 | 13 May 2021 | Printed in Canada