FAQ
Getting Started
How do I connect quickly?
Follow the Quick Start, then check the Network & Mountpoints page. In short: use the regional hostname (NA/EU/AUS), Port 2101, mountpoint AUTO (ALL CAPS), and make sure your app or device sends NMEA GGA to the caster.
What is GNSS RTK in simple terms?
RTK is a real-time correction method that uses fixed base stations and streams corrections to your rover over the internet (NTRIP), delivering centimeter-level accuracy in open sky.
Connection & Settings
Which server (host) should I use?
Use the hostname closest to you. If your device only accepts numbers or DNS is blocked, use the IP fallback:
North America
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
Which mountpoint should I choose?
Use AUTO unless your workflow explicitly needs a global frame. AUTO applies the regional frame automatically (e.g., NAD83(2011) in the US, ETRS89 in Europe, GDA2020 in Australia). For global frames choose AUTO_WGS84 or AUTO_ITRF2020.
Do I need to send GGA?
Yes. The caster needs your position (NMEA GGA) to select the nearest base station. Enable "Send GGA to caster" in your app or device. See NTRIP & GGA Essentials.
What correction format should my rover accept?
RTCM 3.x over NTRIP. Most modern GNSS receivers and apps support this out of the box.
Accuracy, Frames & Heights
What accuracy should I expect?
In open sky: ~1–2 cm horizontal and 2–4 cm vertical with RTK FIX. Sky view, antenna quality, and distance to the nearest base station all affect results.
What's the difference between AUTO, AUTO_WGS84 and AUTO_ITRF2020?
AUTO — applies the regional frame automatically (NAD83 / ETRS89 / GDA2020 / NZGD2000)
AUTO_WGS84 — uses global WGS84
AUTO_ITRF2020 — uses ITRF2020
AUTO_ITRF2014 — uses ITRF2014
Pick the one that matches your project's coordinate system.
Why do my elevations look "off"?
RTKdata delivers ellipsoidal heights. Apply a geoid model (e.g., EGM2008, GEOID18, AUSGeoid2020) in your GIS or field software to get orthometric heights (mean sea level). See Understanding Heights.
Coverage & Performance
Is coverage limited to North America, Europe, and Australia?
No — those are regional server endpoints. Coverage is global with 20,000+ reference stations. The network assigns the nearest base using your GGA position, regardless of which endpoint you connect to. Always validate with a quick outdoor FIX test.
When does RTK perform best?
In open environments with clear satellite view and minimal multipath (away from trees, buildings, metal structures).
Devices & Compatibility
What equipment is compatible?
Any rover, drone, or app that supports NTRIP and RTCM 3.x. See the Integration Hub for step-by-step guides covering DJI, Emlid, Trimble, Leica, ArduSimple, and more.
Do I need my own base station?
No. RTKdata is a Network RTK service — the 20,000+ reference stations act as your base. You only need your rover and an internet connection.
How many devices can I use per subscription?
One active connection at a time. If a second device connects with the same credentials, the first gets disconnected. For simultaneous use, add data streams from your account dashboard.
Accounts, Plans & Billing
Do you offer a free trial?
Yes — 30 days, full access, no credit card required. It ends automatically. Start Free Trial
What are the prices?
See the Pricing page for current monthly, annual, and 5-year plans.
Can I cancel and resume later?
Yes. Manage your subscription from your account dashboard. No lock-in, no penalties.
Troubleshooting & Support
I'm connected but getting no corrections.
Almost always: GGA is not being sent. Enable "Send GGA to caster" in your app settings, confirm mountpoint = AUTO (ALL CAPS), and ensure you're outdoors. See Troubleshooting & FAQ.
Which port should my firewall allow?
TCP 2101 outbound.
How do I contact support?
Email [email protected]. Include your username, region/host, mountpoint, device model, and screenshots of your NTRIP settings and RTK status.
Legal & Company
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