UM980
Unicorecomm NebulasIV RTK GNSS · Tri-Band L1/L2/L5 · 0.008m Accuracy · 1408 Channels · BDS B1I/B2I/B3I · 20Hz · LGA-54
| Part Number | UM980 |
|---|---|
| Manufacturer | Unicorecomm |
| GNSS Platform | NebulasIV RTK engine |
| Frequency Bands | L1 + L2 + L5 tri-band (GPS L1C/A L2C L5, GLONASS L1OF L2OF, Galileo E1 E5a E5b, BeiDou B1I B2I B3I, QZSS L1C/A L2C L5, SBAS L1C/A) |
| Concurrent GNSS | 4 systems + QZSS + SBAS, all three frequency bands simultaneously |
| Maximum Channels | 1408 channels — industry-leading tracking capacity |
| RTK Position Accuracy | 0.008 m + 1 ppm CEP (centimeter-level) |
| Maximum Update Rate | 20 Hz (RTK and PVT maintained at full rate) |
| Navigation Sensitivity | -167 dBm |
| Tracking Current | 350 mA (continuous, L1+L2+L5, all GNSS active) |
| Package | LGA-54 (17.0 × 22.0 mm footprint) |
| Supply Voltage | 3.0 V – 3.6 V |
| Operating Temperature | −40°C to +85°C |
| Supply Voltage (VCC) | 3.0 V – 3.6 V |
|---|---|
| Backup Voltage (V_BCKP) | 1.65 V – 3.6 V |
| Tracking Current (L1+L2+L5) | 350 mA typical @ 3.3V, all constellations active |
| Acquisition Current | 400 mA peak |
| Standby Current (V_BCKP) | < 30 µA |
| Hot Start TTFF | < 2 s typical |
| Cold Start TTFF | < 30 s typical (open sky) |
| RTK Convergence Time | < 10 s typical (with good conditions) |
| Max RTK Baseline | Up to 30 km (ionosphere-corrected, tri-band) |
| ESD Protection | ±4 kV HBM (all pins) |
| Primary Interfaces | 3 × UART, 1 × SPI, 1 × I²C |
|---|---|
| Protocol | NMEA 0183 v4.11, RTCM v2.3 / v3.0 / v3.2 / v3.3 |
| RTCM Input/Output | RTCM 3.x MSM4/MSM5/MSM7 (corrections in and out) |
| RTK Modes | Rover, Base Station, Moving Base |
| Time Pulse Output | 2 × configurable 0.25 Hz – 10 MHz, high precision |
| Event Marker Input | 2 × external event with precision timestamping |
| Geofencing | Built-in configurable circular geofence |
| Data Logging | On-chip raw observation and navigation data logging |
| BeiDou Compatibility | Full BDS-2/BDS-3 with B1I/B2I/B3I tri-frequency support |
| Pins | 54-pin LGA (3×UART, SPI, I²C, 2×TIMEPULSE, 2×EVENT, RESET_N, SAFEBOOT_N, V_BCKP, VCC, GND×6, RF_IN, Reserved) |
| Part Number | UM980 |
|---|---|
| Orderable Qty | 1 pcs – 5,000+ pcs |
| Price (1–9 pcs) | Contact for quote |
| Price (10–99 pcs) | Contact for quote |
| Price (100–499 pcs) | Contact for quote |
| Price (500+ pcs) | Best pricing available |
| Lead Time (stock) | 3–7 business days |
| Packaging | Tape & Reel (T&R), 250 pcs/reel |
| RoHS Compliant | Yes (Pb-free) |
Please confirm exact parameters with manufacturer datasheet.
The UM980 is a flagship high-precision GNSS module from Unicorecomm, built on the advanced NebulasIV RTK engine. It delivers tri-band L1+L2+L5 reception across all four major GNSS constellations — GPS, GLONASS, Galileo, and BeiDou — with an unmatched 1408-channel tracking capacity. With RTK positioning accuracy of 0.008 m + 1 ppm CEP, the UM980 represents the pinnacle of GNSS precision for UAV applications where every millimeter matters: survey-grade mapping, precision agriculture, construction monitoring, and industrial inspection.
What truly distinguishes the UM980 is its comprehensive BeiDou tri-frequency support (B1I/B2I/B3I). This full BDS-2/BDS-3 capability provides exceptional performance across Asian, Russian, and Middle Eastern operational theaters where BeiDou constellation density is highest. The tri-band architecture delivers faster RTK convergence and superior ionospheric estimation compared to dual-band modules — the third frequency (L5/B2a) adds a critical additional measurement that resolves carrier phase ambiguities more reliably, particularly during challenging ionospheric conditions or when operating at extended baselines up to 30 km.
The module's 1408 channels provide overwhelming satellite tracking reserves — four times the typical capacity of u-blox F9 receivers. This means the UM980 can simultaneously track all visible satellites across all constellations on all three frequencies without resource constraints. At 20 Hz update rate with full RTK precision maintained, the module outputs smooth trajectory data suitable for fast-moving UAV platforms. The rich interface set — 3×UART, SPI, and I²C — provides maximum integration flexibility, while dual timepulse and event marker inputs enable precision geotagging and sensor synchronization for photogrammetry and LiDAR applications.
Key Features
- 0.008 m + 1 ppm RTK accuracy — millimeter-level positioning for professional UAV applications
- Tri-band L1+L2+L5 with full BeiDou B1I/B2I/B3I for optimal BDS-2/BDS-3 performance
- 1408 channels — industry-leading capacity for simultaneous multi-constellation tri-band tracking
- 20 Hz update rate with full RTK precision maintained on all outputs
- Full RTCM 3.x support (MSM4/MSM5/MSM7) for worldwide correction network compatibility
- 3×UART, SPI, I²C interfaces — maximum flexibility for complex autopilot architectures
- Dual timepulse and dual event marker for precision geotagging and sensor synchronization
- Professional tri-band GNSS antenna required (L1/L2/L5 active patch, sold separately)
Need UM980 for Your Professional UAV RTK System?
Get competitive pricing and fast delivery from UAVCHIP. Stock available for immediate shipment worldwide.
UAVCHIP sources genuine UM980 modules through Unicorecomm's authorized global distribution network. Unicorecomm (和芯星通) is a leading Chinese GNSS IC manufacturer with a strong track record in high-precision positioning technology. The UM980's NebulasIV platform has been validated across thousands of surveying, agricultural, and UAV deployments in Asia and increasingly worldwide. Each shipment includes lot traceability documentation and firmware verification to ensure the latest RTK engine updates are installed. The LGA-54 package ships in ESD-safe moisture-barrier packaging per MSL Level 3. For regional customers in Russia and CIS countries, we offer logistics routing optimized for customs clearance and delivery speed. Our technical team provides configuration support for ArduPilot integration, antenna matching guidance (the UM980 requires a professional tri-band L1/L2/L5 active patch antenna such as the Unicorecomm UA240 or equivalent with ≥ 30 dB LNA gain), and RTK base/rover setup assistance. Volume pricing programs and scheduled delivery contracts are available for professional UAV fleet operators.