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M-AJ-QUATRO

M-AJ-QUATRO

Category

Communication and Control
Communication and Control

The M-AJ-QUATRO is advanced CRPA antenna system for A-PNT operations in GNSS-denied environments. Labs, a subsidiary of VIAVI Solutions Inc., is a high-performance Controlled Reception Pattern Antenna (CRPA) system engineered for assured positioning, navigation, and timing (A-PNT) in electromagnetically contested environments. Operating across the full L1, L2, and L5 GNSS bands, the system delivers robust signal fidelity even in the presence of wideband and in-band interference. With more than 34dB suppression in

its export-free configuration and 45dB+ in its export-controlled model, the M-AJ-QUATRO actively nullifies jamming sources while providing jammer direction-finding for enhanced situational awareness. Optimized for military and aerospace operations, the antenna integrates FPGA-secured signal processing with adaptive digital nulling, anti-spoofing encryption, and real-time interference rejection. Its precision-engineered CRPA architecture minimizes multipath distortion and enhances signal integrity under dynamic and degraded signal conditions. With full compatibility across GPS, GLONASS, GALILEO, BEIDOU, and QZSS, and seamless integration with Inertial Labs’ GNSS-aided INS systems, the M-AJ-QUATRO ensures operational reliability across the globe. Built to meet rigorous MIL-STD-810G and MIL-STD-461F standards, it is a mission-critical asset in modern electronic warfare and A-PNT resilience strategies.
Tech Specs
SizeRF Module
WeightRF Module
RF Module Power< 10W
External Power12 to 28V DC
RF ConnectorsMCX (1x to GNSS RX, 4x to ANT)
Data/Power Connector25 pin Micro-D style MIL-DTL-83513
Data InterfaceSerial over USB (FTDI)
BandsGNSS L1, L2, L5
PolarizationRHCP (AR< 3dB above 15° elevation)
Gain2dBic > 15° elevation
Interference Sources3
Suppression Level34dB
Interference TypesWideband, in-band
Operating Temperature-40°C to +80°C
Storage Temperature-45°C to +85°C
Altitude>18,000 ft AGL
Shock & VibrationsMIL-STD-810G
EMC/EMIMIL-STD-461F
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