Stonex S980A/S900A NTRIP Setup: Cube-a and Web UI

Set up the Stonex S980A and S900A with RTKdata NTRIP in Cube-a or the Web UI at 192.168.10.1. Receiver or controller internet, mountpoint AUTO, GGA, and tilt.

The Stonex S980A and S900A are professional survey-grade GNSS receivers by Stonex. The S980A is the flagship model with IMU tilt compensation, a built-in 4G modem, and multi-constellation tracking. The S900A is a capable mid-range receiver sharing the same NTRIP workflow. Both receivers are configured through Stonex Cube-a field software running on an Android controller, or alternatively through the receiver's built-in Web UI accessible at 192.168.10.1.

Requirements

• Stonex S980A or S900A powered on with clear sky visibility

• Stonex Cube-a field software on an Android controller or tablet

• Internet connection via the receiver's built-in 4G modem (SIM card), phone hotspot, or controller mobile data

• RTKdata.com account with active RTK credentials (username starting with rtk and password from your RTK dashboard)

• Survey pole with Stonex adapter

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Step-by-step setup via Stonex Cube-a

1

Connect to the receiver

1. Power on your S980A or S900A and wait for satellite tracking (LED indicators confirm satellite lock).

2. Open Stonex Cube-a on your Android controller.

3. Go to Tool > Connect and select your Stonex receiver from the Bluetooth device list.

4. Pair and connect. Cube-a will display the receiver model and current status.

2

Configure the rover working mode

1. In Cube-a, go to Tool > Working Mode.

2. Select Rover as the working mode.

3. Under Connection Mode, select NTRIP.

4. If using the receiver's internal SIM card for internet: select the network type that uses the receiver's modem and configure the APN for your mobile carrier (common carriers are pre-stored in Cube-a; select Custom if yours is not listed).

5. If using controller internet (PDA Network): select the option that routes internet through the controller/tablet.

3

Enter RTKdata.com NTRIP settings

Fill in the NTRIP connection fields. Select the tab for your region:

North America

• Host / Caster IP: rtk.rtkdata.com

• Host (IP fallback): 13.56.117.10

• Port: 2101

• Username / Password: From RTK Credentials in the internal dashboard (not website login)

• Mountpoint (ALL CAPS): AUTO

Europe

Australia

Type AUTO manually in all capital letters. Do not tap "Recover Mountpoint" or "Recupera Mountpoint" to browse the source table — it may time out or return an incomplete list with large casters. Simply type AUTO directly.

4

Verify GGA position sending

1. In the NTRIP settings, ensure Send GGA (or Send NMEA position) is enabled.

2. RTKdata requires your rover's GGA position to select the nearest base station and generate corrections for your location.

RTKdata will not send corrections unless it receives your rover's GGA position. If GGA sending is disabled, the NTRIP connection will appear successful but no correction data will arrive.

5

Apply and start the survey

1. Tap OK and then Apply (or Applica) to save the rover configuration to the receiver.

2. Return to the main survey screen in Cube-a.

3. Start a new survey or continue an existing project.

4. The receiver connects to the internet, then to the RTKdata NTRIP caster.

5. Watch the solution status: Autonomous > DGPS > Float > Fixed.

6. Once Fixed, you are ready to collect points, stake out, or run your survey workflow.

Alternative: Setup via Web UI (192.168.10.1)

The S980A and S900A also have a built-in web configuration interface:

1. Connect your phone or laptop to the receiver's Wi-Fi hotspot (SSID is typically the receiver serial number).

2. Open a browser and navigate to 192.168.10.1.

3. In the Web UI, go to Rover Mode > Data Link > Network.

4. Enter the Caster Service parameters: host, port, mountpoint, username, and password as listed above.

5. Click Apply to save the configuration.

6. The receiver will connect to the NTRIP caster and begin receiving corrections.

This method is useful for quick configuration without Cube-a, or when troubleshooting connectivity issues.

S980A tilt compensation

The S980A features IMU-based tilt compensation. Once RTK Fix is achieved, Cube-a will prompt you to initialize the IMU sensor if needed — walk a few steps to calibrate. Initialization typically takes only a few seconds. You can then measure with the pole tilted without leveling.

Compatible field software

In addition to Cube-a, Stonex receivers are compatible with:

• Carlson SurvPC / SurvCE — configure NTRIP under Equip > GPS Rover > Internet settings

• MicroSurvey FieldGenius — configure NTRIP under Instrument > GNSS Rover Setup

• QField / QGIS — use an external NTRIP client app (e.g., Lefebure) to feed corrections via Bluetooth

Vertical reference (heights)

Heights from RTKdata.com are ellipsoidal, not orthometric (mean sea level). Configure a geoid model in Cube-a under your project coordinate system settings if your project requires orthometric heights.

Troubleshooting

Problem	Cause	Fix
No internet connection	SIM card not active or APN misconfigured	Check SIM card data plan. Configure the correct APN for your carrier in the network settings (or select Custom in Cube-a).
Empty mountpoint list	Source table timeout or wrong host	Do not browse — type AUTO manually in all caps. Verify the host address.
No corrections received	GGA sending disabled	Enable Send GGA in the NTRIP settings. RTKdata requires GGA to select the nearest base.
Stuck on Float	Poor sky conditions or far from base	Move to open sky. Check RTKdata base coverage at rtkdata.com.
Credentials rejected	Using website login instead of RTK credentials	Use the username (starting with rtk) and password from your RTK dashboard, not your website account.
Web UI not loading	Not connected to receiver Wi-Fi	Connect your device to the receiver's Wi-Fi hotspot first, then navigate to 192.168.10.1.
"Connection Mode" not showing NTRIP	Working mode set to Base	Change the working mode to Rover first under Tool > Working Mode.

Tips and tricks

• The S980A's built-in 4G modem eliminates the need for a phone hotspot — insert a SIM card and the receiver manages internet connectivity independently.

• Save the NTRIP profile so your crew can reuse it without re-entering settings each day.

• S900A users without a built-in modem should use the controller's internet connection.

• Check correction age in the Cube-a status bar. Values above 5 seconds indicate an unstable internet link.

• The Web UI at 192.168.10.1 is a quick way to verify or change NTRIP settings without launching Cube-a.

• Keep firmware updated via the Stonex firmware update tool to benefit from the latest GNSS constellation support.

Related Industry Solutions

• Surveying

• Construction