Smart Antenna HX-MR405A Integrated with RTK Module UM980

Introduction
Key Features
Parameters
Applications
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Introduction

HX-MR405A is a new-generation housed multi-band, multi-constellation full-frequency smart antenna supporting BDS, GPS, GLONASS, Galileo, and QZSS. Integrating Harxon’s industry-leading GNSS antenna technology with Unicore’s full-constellation, full-frequency RTK positioning module UM980, the HX-MR405A combines the GNSS antenna and module into a compact and ruggedized enclosure, delivering reliable and precise positioning performance. It supports single point meter level accuracy, DGPS sub-meter level and RTK centimeter/ millimeter level accuracy, making it highly suitable for applications requiring high-precision navigation and positioning, such as precision agriculture, construction machinery, machine control, and autonomous mining trucks.

Key Features

Integrated Design and Compact Form Factor

HX-MR405A integrates the high-precision GNSS antenna and module into a single compact unit, ensuring excellent compatibility between the antenna and module while simplifying system integration and reducing development costs for engineers
Ruggedized GNSS Antenna with High Phase Center Stability

The main part of HX-MR405A is a ruggedized GNSS antenna designed for tough environments. It offers full support for reliable and consistent satellite signals tracking, including GPS, GLONASS, Galileo and BeiDou, QZSS
High Performance RTK Positioning Module

HX-MR405A is integrated with Unicore’s full-constellation full-frequency RTK positioning module UM980, which integrates RF, baseband and high precision algorithm. It can simultaneously track multiple frequencies of all GNSS systems
Strong Anti-Interference Performance

The antenna equips a robust pre-filtered LNA to minimize de-sensing from high level out-of-band signals, and restraints possible electromagnetic interferences, offering strong anti-interference performance for consistent and reliable GNSS signals

Parameters

Signal Received	GPS L1 C/A, L1C, L2P (Y), L2C, L5 GLONASS G1, G2, G3 BDS B1I, B2I, B3I, B1C, B2a, B2b GALILEO E1, E5a, E5b, E6 SBAS L1C/A QZSS L1C/A, L1C, L2C, L5, L6 NavIC L5
Nominal Impedance	50Ω
Polarization	RHCP
Axial Ratio (@Zenith)	≤3dB
Azimuth Coverage	360°
Peak Gain	5dBi

RTK Connection
Positioning Module	UM980
Single Point Accuracy	Horizontal: 1.5m Vertical: 2.5m
DGPS Accuracy	Horizontal: 0.4m Vertical: 0.8m
RTK Accuracy	Horizontal: 0.8cm+1ppm Vertical: 1.5cm+1ppm
Timing Accuracy (RMS)	20 ns
Velocity Accuracy (RMS)	0.03 m/s
Channels	1408
Time to First Fix	Cold Start<30s, Warm Start <20s Hot Start <5s
Initialization Time	＜5s (Typical)
Initialization Reliability	＞99.9%
Data	Data Refresh Rate: 50Hz Positioning Differential Data: RTCM 3.X Data Format: NMEA-0183, Unicore

LNA Gain	>26dB
Noise Figure	≤2dB
Output VSWR	≤2
Passband Ripple	±2dB

Dimensions	Φ150*53mm
Connector	Aviation Plug, M12 8PIN
Weight	≤650g
Mounting	Pole Mount: 5/8"-11 UNC threaded mounting hole, depth 10–11 mm Screw Mount: 4 × M8 screws (standard configuration)
Interface Pin Order	1. RX1_232/RX1-A_485 2. TX1_232/RX1-B_485 3. RX2_232/TX1-X_485 4.TX2_232/TX1-Y_485 5. GND 6. PPS 7. 12V 8. GND