Common Connection Issues

This guide covers the most frequently reported connection problems based on real support conversations. Follow these steps before contacting support.

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"Waiting for Corrections" — Nothing Happens After Connecting

This is the #1 support request. You're connected but no corrections arrive.

Checklist

Check	What to do
GGA enabled?	Your device MUST send NMEA GGA messages to the caster. Without GGA, RTKdata cannot determine your position and will not send corrections. Set GGA output to 1 second (1 Hz).
Outdoors?	You need a clear sky view with at least 5–6 satellites. RTK will never work indoors.
Mountpoint in ALL CAPS?	The mountpoint must be AUTO, AUTO_WGS84, AUTO_ITRF2020, or AUTO_ITRF2014. Typing auto, Auto, or anything else will not work.
Correct credentials?	Use your NTRIP credentials from the RTKdata Dashboard — these are different from your website login. Your username typically starts with rtk.
Internet connection?	Ensure your device has a stable internet connection (Wi-Fi, mobile hotspot, or 4G dongle).

Still not working?

Try the IP fallback instead of the hostname:

Region	Hostname	IP Fallback	Port
Global	rtk.rtkdata.com	13.56.117.10	2101
Europe	eu.rtkdata.com	3.73.41.96	2101
Australia	aus.rtkdata.com	54.206.56.130	2101

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"Cannot Load Mountpoint List"

Most devices do not auto-populate the mountpoint list. This is normal.

Solution: Manually type the mountpoint name. Valid options (ALL CAPS):

• AUTO (recommended)

• AUTO_WGS84

• AUTO_ITRF2020

• AUTO_ITRF2014

No other mountpoints exist. Any other value will fail silently.

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"Invalid Password" / "Auth Failed"

Cause	Fix
Using website login instead of NTRIP credentials	Go to RTK Credentials in your dashboard
Extra spaces from copy/paste	Re-type username and password manually
Expired subscription	Check your account status at My Account
Trial ended	Free trial is 30 days, one per user — check if yours has expired

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Stuck on "FLOAT" — Not Reaching FIX

FLOAT means your device is receiving corrections but hasn't converged to centimeter accuracy yet.

Common causes

1. Obstructed sky view — Buildings, trees, or structures cause multipath interference. Move to an open area.

2. Poor internet connection — Latency above 1 second degrades RTK performance. Switch to a more stable connection.

3. Wrong mountpoint — Ensure you're using AUTO (ALL CAPS).

4. Just wait — Initial convergence can take up to 90 seconds in good conditions. If FLOAT persists beyond 2–3 minutes, check the above.

5. Too far from base station — Network RTK works best within 30–50 km of a reference station. Check the Coverage Map.

Quick fix sequence

1. Disconnect from the NTRIP service

2. Verify all settings (host, port, mountpoint, credentials, GGA)

3. Move to a location with clear sky view

4. Reconnect

5. Wait 60–90 seconds

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Connection Drops or Times Out

• DNS issues on older devices: Use the IP fallback addresses listed above instead of hostnames.

• Firewall or VPN: Ensure TCP port 2101 is not blocked. Disable VPN if active.

• Mobile provider restrictions: Some carriers block non-standard ports. Try connecting via Wi-Fi hotspot from a different device.

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Lefebure NTRIP Client — Specific Issues

Lefebure is a popular Android NTRIP client. Common setup mistakes:

1. Enable "Transmit GGA" — In your NTRIP profile settings, set the GGA interval to 5 or 10 seconds. Without this, you will receive zero data.

2. Be outdoors first — Get a GPS position fix (5–6 satellites minimum) before connecting.

3. Mountpoint: Type AUTO in ALL CAPS.

4. If DNS fails: Use IP 3.73.41.96 (EU) or 13.56.117.10 (global) instead of the hostname.

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DJI Drones — Common Problems

"No RTK Data Available" or "RTK Signal Weak"

• Ensure you selected "Custom Network RTK" (not D-RTK 2 Mobile Station)

• On Agras drones: Disable D-RTK 2 search — it conflicts with network RTK

• The drone itself (not just the controller) needs a GNSS fix before RTK will connect

• Start the drone outdoors, wait for satellite lock, then enable RTK

"Fail to Enable Network RTK"

1. Check internet connection on the controller

2. Verify NTRIP settings: Host, Port 2101, Mountpoint AUTO

3. Restart RTK in DJI Pilot 2: disable RTK → re-enable → reconnect

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Emlid Receivers — Common Problems

"Confirm Login to Resume Data Sync"

This Emlid Flow app message means you need to re-authenticate in the app. Sign back in, then retry the NTRIP connection.

Datum Selection in Emlid Flow

• Set to Global CS (not a local datum like NAD83) for the NTRIP connection

• Apply local datum transformations in post-processing or in your GIS software

• See Coordinate Systems & Datums for details

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Before Contacting Support

Please include the following in your support request:

1. Device/app you're using (brand and model)

2. Country/region where you're working

3. Exact error message (screenshot if possible)

4. NTRIP settings you entered (host, port, mountpoint — do NOT share your password)

5. RTK status shown on your device (SINGLE / FLOAT / FIX)