GNSS Rovers & Receivers

Connect your survey pole, base station, or handheld GNSS receiver to RTKdata.com. This guide covers Emlid Reach, Bad Elf, and legacy receivers like Trimble, Leica, Topcon, and Stonex.

1. Select Your Manufacturer

Top-tier devices have dedicated visual guides. For all others, use the Universal Setup below.

Manufacturer	Device / Model	Setup Guide
Emlid	Reach RS2+	👉 Open Guide
	Reach RX / RX2	👉 Open Guide
Bad Elf	Flex	👉 Open Guide
	Flex Mini	👉 Open Guide
SparkFun	RTK Facet	👉 Open Guide
Septentrio	Mosaic X5	👉 Open Guide
Others	Trimble, Leica, Topcon, Stonex	⬇️ Scroll to Universal Setup

---

2. Network Credentials (Quick Reference)

If you already know your device menu, here are the raw data points you need.

🛑 Important: Do not use your website login! Use the NTRIP Username & Password found in your Dashboard.

🇪🇺 Europe

• IP / Host: eu.rtkdata.com

• Port: 2101

• Mountpoint: AUTO

🇺🇸 North America

🇦🇺 Australia

---

3. Universal Setup (Trimble, Leica, Topcon, etc.)

Most professional survey rovers use different names for the same settings. Use this Translation Dictionary to configure your device correctly.

Step A: Configure the NTRIP Caster

Find the menu called "GNSS Contacts", "RTK Profiles", or "Internet Source".

Standard Term	Trimble / Spectra	Leica Geosystems	Topcon / Sokkia	Your Value
IP / Host	IP Address / URL	Server	IP Address	rtk.rtkdata.com (Select region)
Port	IP Port	Port	Port	2101
Mountpoint	Mountpoint	Mountpoint	Source	AUTO
User	NTRIP Username	User ID	User	(From Dashboard)
Password	NTRIP Password	Password	Password	(From Dashboard)

⚠️ Trimble Users – Important Setting

If you are using Trimble (R-Series, SPS, TSC, GFX, TMX, etc.):

When selecting the RTK correction type, choose:

Single Base (RTCM via NTRIP)

Do not select: iMAX, VRS, MAX, FKP, or other proprietary “Network RTK” modes.

RTKdata uses a network of many physical base stations. Your rover is automatically assigned the most suitable station based on its live position (GGA). The correction stream you receive is standard RTCM, which Trimble should treat as a Single Base correction source for best compatibility and reliable RTK Fixed.

Step B: The "Data Format" Trap

Your rover will ask what format to expect.

• Correct Setting: RTCM 3.2 (or RTCM 3.X, Auto).

• Avoid: CMR, CMR+, RTCM 2.3.

Step C: NMEA Output (Crucial!)

Since we use Nearest Base technology, you must send your position to the server.

• Find the setting: "Send GGA" or "NMEA Output".

• Set it to: ON (or "1 second", "0.1 Hz").

• Without GGA, the server will not send any corrections.

---

4. Troubleshooting Common Rover Issues

Status: "Source Table Not Found"

• Cause: Your device cannot resolve the domain name (DNS issue).

• Fix: Try using the numeric IP address instead of the domain (e.g., use 3.73.41.96 for EU).

Status: "Connected" but "Latency > 5s"

• Cause: You are using the default Port 80, which is often throttled by mobile carriers.

• Fix: Change Port to 2101.

Status: "Float" (No Fixed Solution)

• Cause 1: Poor GNSS conditions (indoors, near buildings/trees, multipath). Fix: Move to open sky and wait 1–2 minutes.

• Cause 2: Outside coverage area. RTK Fixed requires nearby base station coverage. Check your location on the coverage map.

• Cause 3: Incorrect correction format selected. Fix: Set format to RTCM 3.x (Auto / RTCM 3.2). Avoid CMR, CMR+, and RTCM 2.x unless explicitly required by your device.

• Cause 4: GGA/NMEA position not being sent (required for proper stream assignment based on your rover’s live position). Fix: Enable Send GGA / NMEA Output (e.g., every 1s).

• Cause 5 (Trimble only): Wrong RTK mode selected. If iMAX, VRS, MAX, or FKP is selected, the rover may connect but never reach RTK Fixed.

  Fix: Configure correction mode as: Single Base (RTCM via NTRIP)

Need a Config File? For some legacy devices (Trimble TSC3, Leica CS15), we can generate a configuration file. Contact Support with your exact controller model.