Overview
The Holybro UM982 Dual Antenna RTK GPS provides high-precision positioning information and is capable of generating non-magnetometer moving baseline yaw determinations for controllers with a single GPS module.
One of the best applications of this GPS is to provide compass-less YAW information to the controller (commonly called GPS Heading or Moving Baseline Yaw). Using this GPS as a yaw source prevents magnetic interference from the vehicle motors and electrical systems, and any environmental interference sources, such as metallic structures or equipment, that can cause incorrect yaw reports to the controller.
This works even if the GPSs are not receiving RTCM data from a fixed RTK station or NTRIP server. The device is based on the Unicore UM982 NMEA GNSS module and supports RTK positioning adjustment for centimeter-level accuracy, GPS/GLONASS, Beidou, Galileo, and QZSS global positioning systems.
It also includes a magnetometer, LED indicators, and a safety button. It also serves as an RTK-corrected vehicle GPS, with or without moving baseline yaw determination, and as a base station GPS for sending RTCM data to a ground control station to provide an RTK source for the vehicle via telemetry.
Note: The Status LED driver has changed. This LED is supported in PX4 1.14, ArduPilot 4.4.0 & later. (More info)
Features
- Dual antennas allow Moving Baseline Yaw (GPS Heading) with just one module
- Can replace the traditional compass/magnetometer
- Perfect for a system/environment with high magnetic interference
- Excellent RTK performance
Tips: It is recommended to use the H-RTK F9P-Base or F9P Helical as your base station because it's a simple setup procedure in Mission Planner & QGroundControl. Currently, QGC cannot configure the UM982 automatically as a base station; additional manual setup is required.
Specification
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Product
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UM982
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Application
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| Compass | IST8310 | |||
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GNSS
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BDS B1I/B2I/B3I
GPS L1C/A/L2P (Y)/L2C/L5
GLONASS L1/L2
Galileo E1/E5a/E5b
QZSS L1/L2/L5
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RTK Accuracy (RMS)
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DGPS Accuracy (RMS)
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Single Point Positioning Accuracy (RMS)
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Antennas Peak Gain (MAX)
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2.5dBi
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LNA Gain
(typical)
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33±2dB
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Time-TO-First Fix
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Cold start: ≤ 30s
Hot start: ≤ 5s
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RTK-SurveyIn-Time
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≤5 minute @2.0mCEP
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Data and Update Rate
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20 Hz Positioning & Heading
20 Hz Raw Data observation
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Port
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Port 1: GH1.25 10-pin
Port 2: USB Type-C Port 3: UART 2 (GH1.25 6pin)
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Cable Length
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GH 10P: 150mm
GH 10P: 400mm
GH 10P to 6P: 300mm
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Antenna Connection Type
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Board: SMA female
Antenna: SMA male
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Baud rate: (Adjustable)
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230400 5Hz default
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Working voltage:
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4.75V~5.25V
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Current Consumption
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~350mA
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Dimensions
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Board: 34.8*58.9*14.4mm
Antenna Diameter: 27.5mm
Antenna height: 59mm
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Weight
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37.9g (without antennas)
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User Guide & Download
- For other technical details and setup guides, please refer to the Holybro Documentation Page
- Setup & Getting Started (Ardupilot)
- Setup & Getting Started (PX4)
- Pinout
- Dimension
- Uprecise Download
- Firmware supports details
Package Included:
- 1x H-RTK UM982
- 2x High Precision Helical Antennas
- 2x Antenna Mounts
- 2x SMA Cables (40cm)
- 2x 10pin - 10pin JST-GH Cables
- 1x 10pin - 6pin JST-GH Cable
- 1x 6pin - 6pin JST-GH Cable
Processing Time
Orders are typically processed and shipped within 1–2 business days.
Delivery dates shown at checkout are estimates provided by the shipping carrier. These dates do not include possible order processing time and are not guaranteed unless the selected carrier service specifically includes a delivery guarantee.
Orders placed on weekends or holidays will usually be processed on the next business day.
Domestic Shipping
Kilitronic currently ships within the United States only. Shipping rates are calculated at checkout based on the shipping destination, package weight, and available carrier services.
Lost or Delayed Shipments
Carrier delays may occur after an order has shipped. If your package appears lost or significantly delayed, please contact us and we will assist in working with the carrier.
Shipping Restrictions
For security and fraud prevention, Kilitronic may decline or cancel orders shipped to:
- Freight forwarding addresses
- Hotels or temporary accommodations
- Certain PO Boxes
- Addresses that cannot be verified
If an order cannot be fulfilled, any payment received will be refunded to the original payment method.
For shipping questions, please contact support@kilitronic.com.
