AJ977XF+ Anti-Jam Multi-Constellation Triple-Band Antenna
The AJ977XF+ Anti-Jam antenna is designed to mitigate interference and jamming signals broadcast from near-ground-based transmitters.
Key Features:
- Great axial ratio (1.0 dB typ.)
- Low LNA noise (2.5 dB typ.)
- High-rejection XF+ Filtering
- High-gain LNA (40 dB typ.)
- Wide voltage input range (2.5 to 16 VDC)
- ESD circuit protection (15 kV)
- IP67 weather-proof housing
- RoHS and REACH compliant
- 20 dB attenuation at 0-15° Elevation
Description
Product Overview
The Calian AJ977XF+ anti-jam multi-constellation triple-band antenna is designed for high accuracy positioning, navigation and timing in environments where interference is present. Supporting multiple GNSS constellations across L1, L2 and L5 bands, it delivers stable signal reception with improved resilience compared to standard anti-jam antennas. By combining low elevation signal suppression with advanced XF+ filtering, the antenna maintains reliable operation even in complex RF environments where traditional solutions may lose signal integrity.
Key Features
Multi-Band GNSS Capability
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Supports GPS, GLONASS, Galileo, BeiDou and NavIC across multiple frequency bands
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Triple band operation improves positioning accuracy and signal reliability
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High-gain active antenna design with integrated low-noise amplifier
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Maintains stable reception for precision positioning and timing applications
Anti-Jam and Interference Resilience
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Low elevation angle nulling reduces interference from ground-based sources
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Provides consistent satellite tracking in environments affected by jamming
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Enables operation closer to interference sources compared to standard antennas
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Maintains usable GNSS signals even when parts of the spectrum are disrupted
XF+ Filtering and Signal Protection
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Advanced XF+ filtering provides deep rejection of out-of-band interference
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Attenuates unwanted signals across a wide frequency range to protect GNSS signals
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The dual-channel signal architecture isolates frequency bands within the antenna
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If one band is affected by interference, other bands continue to deliver usable signals
Signal Integrity and Accuracy
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Circular polarisation improves multipath rejection
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A high signal-to-noise ratio supports accurate positioning
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Stable phase centre characteristics for precision applications
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Designed to maintain clean signal paths in high RF noise environments
Rugged Environmental Design
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IP67-rated enclosure for protection against dust and water
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Durable housing suitable for outdoor, transport and industrial use
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Designed to withstand vibration and shock in mobile deployments
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Wide operating temperature range for use in harsh environments
Installation and Integration
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Through-hole mount design for secure installation
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Suitable for vehicle roofs, infrastructure and outdoor systems
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Compatible with GNSS receivers and positioning platforms
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Designed for long-term deployment in fixed and mobile applications
Applications and Use Cases
The AJ977XF+ is suitable for:
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Mission-critical positioning and timing systems
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Law enforcement and public safety
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Fleet tracking and transport systems
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Surveying and geospatial applications
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Industrial and infrastructure monitoring
Dimensions Drawings
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More Information
| Brand | Calian Group | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Specifications |
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Ordering Information
Part Number 33-AJ977XF+-xx
where xx = connector type, 01 = TNC (female), 14 = type-N (female)
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