Alpha
Alpha 4i GNSS Rover Set – Ultra-Compact RTK with 90° Tilt Sensor
The Alpha 4i GNSS Rover Set delivers fast, high-precision positioning with multi-constellation support, rugged IP67 durability, and real-time connectivity for professional land surveyors.
$4,275.00
SKU: MET-GPSR-03
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Product Highlights
- Multi-Constellation GNSS Tracking: Supports GPS, GLONASS, Galileo, and BeiDou for maximum positioning accuracy.
- Rugged and Lightweight Design: IP67-rated for dustproof and waterproof performance.
- Fast RTK Initialization: Achieve centimeter-level accuracy within seconds.
- Long Battery Life: Up to 12 hours of continuous field operation.
- Built-In Wi-Fi, Bluetooth, and 4G LTE: Seamless real-time communication and data transfer.
Overview
The Alpha 4i GNSS Rover Set is engineered for precision, portability, and efficiency, making it an ideal solution for mobile surveyors and geospatial professionals. Equipped with a 1408-channel GNSS receiver, it provides multi-constellation tracking, ensuring high-precision RTK positioning in diverse environments.
The IMU tilt sensor enables tilted measurements up to 90°, eliminating the need for leveling the pole and allowing for faster and more flexible data collection. The nano-material shell and aluminum alloy construction provide rugged durability, while the IP67 rating ensures dustproof and waterproof protection.
The integrated UHF radio supports both Rx and Tx modes and provides a 3km communication range, while the external radio compatibility extends the range up to 15km. Powered by an 18-hour battery, the Alpha 4i ensures continuous field operation.
The DiMap surveying software enhances usability with real-time mapping, stakeout, and data collection, and the Android-based compatibility ensures seamless integration with mobile devices.
Specifications
| Channels | 1408-channel GNSS module supporting all GNSS satellites and frequencies |
|---|---|
| IMU Technology | Tilt measurement up to 90° |
| 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 |
| USB Type-C port | for charging and data transfer |
| Battery | 18-hour battery life (Ntrip), 15 hours (Radio Receiving), 8 hours (Radio Transmitting) |
| Dimensions | 98mm x 53mm |
| Weight | 380g |
Features
Multi-Constellation GNSS Tracking: Supports GPS, GLONASS, Galileo, and BeiDou for maximum positioning accuracy.
Rugged and Lightweight Design: IP67-rated for dustproof and waterproof performance.
Fast RTK Initialization: Achieve centimeter-level accuracy within seconds.
Long Battery Life: Up to 12 hours of continuous field operation.
Built-In Wi-Fi, Bluetooth, and 4G LTE: Seamless real-time communication and data transfer.
Web-Based Configuration: Manage settings easily from any device with a browser.
NFC Instant Connection: Fast pairing with compatible controllers.
Internal 8GB Memory: Store data securely without additional devices.
In the Box
- Alpha 4i GNSS Receiver
- Rechargeable Li-ion Battery
- Dual Port Smart Charger
- GNSS Survey Antenna
- Antenna Cable
- Data Transfer Cable (USB)
- Rugged Carrying Case
- Quick Start Guide
- Calibration Certificate
- Tools and Accessories Kit
Product Downloads
Download the datasheet, brochure or user guide for this product (PDF).
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| Specification | This product | |||
|---|---|---|---|---|
| Brand | Alpha | South | South | South |
| Price | $4,275.00 | $4,540.00 | $7,285.00 | $4,540.00 |
| Availability | In stock | In stock | In stock | In stock |
| Product Type | GNSS Receiver | GNSS Receiver | GNSS Receiver | GNSS Receiver |
| Condition | New | New | New | New |
| Recommended Use | High-precision GNSS RTK work | High-precision GNSS RTK work | High-precision GNSS RTK work | High-precision GNSS RTK work |
| Channels | — | 1698 channels | 1760 channels | — |
| IMU / Tilt Compensation | — | Yes | Yes | Yes |
| Connectivity | — | Bluetooth, 4G/LTE, UHF radio | Bluetooth, 4G/LTE, UHF radio | Bluetooth, Wi-Fi, 4G/LTE, UHF radio |
| IP Rating | IP67 | — | IP67 | — |
| Package Type | Base & Rover Set | Rover Set | Rover Set | Rover Set |
| Delivery Time | 4–7 business days | 4–7 business days | 4–7 business days | 4–7 business days |
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