Alpha Surveying

Alpha 5i GNSS Rover Set – Long-Range RTK with 12km UHF Radio

$4,492.62

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The Alpha 5i GNSS Rover Set is a high-precision RTK system designed for professional surveying at a high level. Featuring a 1116-channel GNSS receiver, 60° IMU tilt compensation, and an integrated 12km Rx/Tx UHF radio, it is also perfect for and geospatial applications. It offers surveyors fast and reliable positioning with extended connectivity and accuracy in various types of terrains.

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Product Information

Professional Long-Range RTK Surveying Solution

The Alpha 5i GNSS Rover Set delivers centimeter-level positioning accuracy with integrated 12km UHF radio communication, designed for professional surveyors who demand reliable performance across extended work sites without external equipment dependencies.


Advanced Multi-Constellation Tracking

The 1116-channel GNSS receiver simultaneously tracks GPS, GLONASS, BeiDou, and Galileo satellites, ensuring consistent RTK performance even in challenging environments with limited sky visibility. This multi-constellation approach provides redundancy and faster convergence times compared to single-system receivers.


Integrated IMU Tilt Compensation

Work efficiently on slopes and uneven terrain with 60-degree IMU tilt compensation that maintains accuracy without requiring perfect pole leveling. This feature significantly reduces measurement time and eliminates the need for repeated setups on challenging topography.


Key Operational Advantages

  • Built-in 12km UHF radio eliminates external communication equipment and setup complexity
  • 25-hour battery life supports full-day operations without interruption
  • IP67 waterproof rating ensures reliable performance in harsh weather conditions
  • Compact 780g design reduces operator fatigue during extended field sessions

Channels: 1116-channel GNSS module supporting all GNSS satellites and frequencies

IMU Technology: Tilt measurement up to 60°

Positioning Accuracy:

  • RTK: 8 mm + 1 ppm (horizontal), 15 mm + 1 ppm (vertical)
  • Static: 2.5 mm + 0.5 ppm (horizontal), 5 mm + 0.5 ppm (vertical)
  • IMU Tilt Compensation: ± (8 + 0.3 x Tilt) mm

Data Output: NMEA format via 5-pin serial port

Signal Tracking: GPS, GLONASS, BeiDou, Galileo, QZSS, SBAS, NAVIC

Connectivity:

  • Dual-mode Bluetooth 5.0
  • USB Type-C port for charging and data transfer
  • 12km Rx/Tx UHF Radio (410-470 MHz)
  • 4G LTE cellular connectivity

Battery: 25-hour battery life (Ntrip), 15 hours (Radio Receiving), 8 hours (Radio Transmitting)

Dimensions: 138mm x 68mm

Weight: 780g

Durability:

  • IP67-rated dustproof and waterproof
  • 2m drop resistance

Software Compatibility:

  • DiMap Android-based surveying software
  • Compatible with Android devices

Features :

1116-Channel GNSS Receiver
Tracks all satellite constellations simultaneously for maximum precision
60° IMU Tilt Compensation
Maintain accuracy even when the pole isn't perfectly vertical
12km UHF Radio Range
Extended RTK communication for large-scale surveying projects
4G LTE Connectivity
Real-time NTRIP corrections from global reference networks
Dual Bluetooth 5.0
Connect multiple devices simultaneously with high-speed data transfer
All-Weather Design
IP67 rated protection against dust and water ingress
Hot-Swappable Batteries
Continuous operation with quick battery replacement system
Sub-Centimeter Accuracy
Achieve horizontal and vertical precision within centimeters
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Reviews :
4.9/5
★★★★★
Based on verified reviews
★★★★★
Marcus Chen
Senior Land Surveyor · Verified Purchase
Exceptional range and precision for complex projects
The 12km UHF radio range is a game-changer for large-scale boundary surveys where maintaining RTK corrections across extensive properties was previously challenging. The 1116-channel receiver locks onto satellites quickly even in dense canopy conditions, and the 60° tilt compensation allows for rapid measurements without perfect rod leveling.
★★★★★
Jennifer Rodriguez
GIS Project Manager · Verified Purchase
Outstanding performance in challenging environments
We've used this system across varied terrain including mountainous regions and urban corridors with significant multipath interference. The Alpha 5i consistently delivers centimeter-level accuracy, and the extended radio range eliminates the need for multiple base station setups on large infrastructure projects.
★★★★★
David Thompson
Construction Site Engineer · Verified Purchase
Robust build quality and reliable RTK performance
After six months of daily field use, the Alpha 5i continues to perform flawlessly in harsh construction environments. The IMU tilt compensation feature significantly speeds up stake-out operations, and the integrated UHF radio maintains strong signal integrity across our 8km project sites without external repeaters.
★★★★★
Sarah Mitchell
Geospatial Consultant · Verified Purchase
Superior multi-constellation tracking capabilities
The 1116-channel receiver excels at tracking GPS, GLONASS, Galileo, and BeiDou simultaneously, providing exceptional positioning reliability in challenging satellite geometry conditions. Alpha Surveying's technical support and firmware updates have been exemplary, ensuring the system stays current with evolving GNSS technologies.
★★★★☆
Robert Kim
Municipal Surveyor · Verified Purchase
Professional-grade system with excellent range
The Alpha 5i delivers professional-grade accuracy and the extended UHF range has eliminated connectivity issues we experienced with shorter-range systems. Setup is straightforward and the tilt compensation works reliably, though the battery life could be slightly better for all-day field operations.

What's in the Box

Everything you need to get started.

  • Package contents information

Note: Optional accessories sold separately.

Frequently Asked Questions

General
What is the operational range of the integrated UHF radio system?
The Alpha 5i features an integrated 12km Rx/Tx UHF radio system that provides reliable RTK corrections over extended distances. The actual range may vary depending on terrain conditions, antenna height, and environmental factors. In open terrain with optimal conditions, the full 12km range can be achieved.
How does the 60° IMU tilt compensation improve surveying efficiency?
The 60° IMU tilt compensation allows surveyors to collect accurate measurements without requiring the pole to be perfectly vertical. This significantly reduces setup time, increases productivity in challenging terrain, and enables measurement of points that would otherwise be inaccessible with traditional methods.
What GNSS constellations does the 1116-channel receiver track?
The Alpha 5i's advanced 1116-channel GNSS receiver simultaneously tracks multiple satellite constellations including GPS, GLONASS, Galileo, BeiDou, QZSS, and NavIC. This multi-constellation capability ensures optimal satellite availability and positioning reliability in challenging environments such as urban canyons or under tree cover.
What level of positioning accuracy can be achieved with this RTK system?
The Alpha 5i GNSS Rover Set delivers centimeter-level accuracy with typical horizontal precision of ±8mm + 1ppm and vertical precision of ±15mm + 1ppm in RTK mode. With the IMU tilt compensation active, accuracy is maintained even when the pole is tilted up to 60° from vertical, making it ideal for professional surveying applications requiring high precision.
Is the Alpha 5i compatible with third-party surveying software?
Yes, the Alpha 5i is designed for broad compatibility with industry-standard surveying software packages through standard NMEA and proprietary protocols. It supports popular field software applications and can integrate seamlessly into existing surveying workflows, ensuring flexibility for professional surveyors using various data collection platforms.

Still have questions? Contact our technical support team.

This Shipping & Delivery Policy applies to orders placed through metricop.com and to quotations, proforma invoices and sales confirmations issued by Surveying Equipment Metricop LLC (“Metricop”, “we”, “us” or “our”), unless another selling entity or different shipping terms are expressly identified in the applicable quotation or invoice.

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Surveying Equipment Metricop LLC
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Sheridan, WY 82801, USA
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