Before you start
Make sure you have the following ready:
Requirements
MicroSurvey FieldGenius for Android or Windows (latest version)
A compatible GNSS receiver connected via Bluetooth or cable
NTRIP credentials: host, port, mountpoint, username and password
A mobile data or Wi-Fi connection on the device
A clear sky view for the receiver (15° elevation mask minimum)
Which version do you have?
FieldGenius Android (FGA) is the current version for most new users. FieldGenius Windows uses slightly different menus. Both are covered below.
FieldGenius for Android
Create or open a project
Launch FieldGenius and tap New Project, or open an existing project. Set the coordinate system and distance units before connecting the receiver.
Connect your receiver
Select Instrument → Add Profile, choose your receiver make and model (for example, Emlid RS3 or Generic NMEA), then name the profile and tap Create.
Under Communication, select Bluetooth and pair the receiver. Once connected, confirm that the satellite count and PDOP are updating.
Configure RTK via Internet
Open instrument settings and select Set Up Corrections → RTK via Internet.
Tap Set Up Internet, then choose Data Collector as the internet source.
Add an NTRIP source
Select Set Up Data Source → Add New Source. Enter the credentials from your NTRIP service:
Addressntrip.your-service.comPort2101MountpointRTCM3_XX (choose from sourcetable)Usernameyour-usernamePasswordyour-passwordTap Get Source Table, then choose the correct mountpoint from the list.
Set antenna height and connect
Set the Antenna Height from the ground to the bottom of the receiver. FieldGenius adds the correct antenna offset for the selected receiver profile.
Tap Connect. The NTRIP stream starts immediately.
Verify your RTK solution
The solution progresses from Single to DGPS or Float, then to Fixed. In good conditions, a fix normally takes 10–60 seconds.
You are ready to work once the status shows RTK Fixed.
Fix confirmed
When the status shows RTK Fixed, your receiver is working at centimetre level. Open Link Information and check that the data counter is increasing to confirm corrections are flowing.
FieldGenius for Windows
The Windows version uses a slightly different menu path.
Connect the instrument and establish a reference
Start FieldGenius and connect your receiver as usual. If you are using a rover with NTRIP, skip the base setup and continue to Link Configure.
Open Link Configure
Go to Instrument Settings → Link Configure.
Set Link Device to Data Collector Internet. Click Setup, then Press to Modify.
Add the NTRIP caster
In the NTRIP Casters dialog, add the server address, port, username and password. Click Get Mountpoints, then select the correct mountpoint.
Set the data format and connect
Set Data Format to RTCM3, then click Connect. The bytes received counter in Link Information should begin increasing.
NTRIP credentials reference
FieldGenius needs five pieces of information. For RTKsub, use:
Enable GGA for VRS mountpoints
If you use a VRS mountpoint, enable Send GGA to caster or Transmit NMEA GGA. Without GGA, the server does not know your position and cannot generate local corrections.
Troubleshooting
| Problem | Likely cause | Fix |
|---|---|---|
| Cannot connect to NTRIP | Wrong host, port blocked or no internet | Check the host and port 2101. Switch between Wi-Fi and mobile data. Ask IT to allow outbound TCP port 2101. |
| Sourcetable loads but no mountpoints appear | Wrong credentials or an empty network | Verify your username and password. Try a different mountpoint name from the service documentation. |
| Stuck on Float | Long baseline, obstruction or wrong mountpoint | Use a VRS mountpoint, move to open sky and check the baseline length. |
| VRS returns no data | GGA is missing | Enable Send GGA and make sure the receiver has at least a Single solution. |
| Fix drops frequently | Unstable internet connection | Use a dedicated hotspot instead of phone tethering and check signal strength. |
| Coordinate offset at Fixed | Wrong project coordinate system | For the Netherlands, use RD New (EPSG:28992) with RDNAPTRANS. For the UK, use OSGB36 with OSTN15. |
Emlid receivers and FieldGenius on Windows
For Emlid receivers on Windows, configure NTRIP in Emlid Flow (ReachView) first, then connect FieldGenius. FieldGenius for Windows does not directly control Emlid NTRIP — the receiver handles the NTRIP connection independently and sends the corrected position through Bluetooth or serial.
