Using the Real-Time GNSS Correction Service:

Preliminary requirements:

  • RTK capable Dual frequency GNSS receiver
  • GNSS receiver (Rover) should have the NTRIP capability
  • A field controller (Rugged field controller/phone/PC) connected to the rover with necessary field software that has the NTRIP/Network capability
  • An Internet connection on the field (via receiver onboard GSM, Wifi, tethered, Internet on controller, etc)

Steps on how to use.

  1. When using SLCORSnet real-time correction services, the end user shall have to configure their GNSS hardware to work on the network RTK mode.
  2. The details required from SLCORSnet for connecting to the SLCORSnet NTRIP Caster is as below;
  • Loginto SLCORSnet system using you account username and password.
  • Username: Chosen by the end user at the point of online registration
  • Password: Chosen by the end user at the point of online registration


  1. As long as the end user has an active SLCORSnet user account with active permissions for real-time services, all real-time correction streams shall be available to the end user regardless of their location
  2. Once the hardware and field software is configured to work on the Network RTK mode, the filed software may prompt for an NTRIP Caster address where you may input the above given SLCORSnet NTRIP Caster address.
  3. Furthermore, the login credentials for the end user’s SLCORSnet account will also have to be entered in to the field software for authentication purposes.
  4. In order to use the SLCORSnet corrections, the end user should have an internet connection which will be used to connect to the SLCORSnet NTRIP Caster gateway
  5. Once a successful internet connection is established, and given the end user is properly authenticated with an active license to use the real time service, the end user shall successfully connect to the SLCORSnet NTRIP Caster
  6. From you purchased services section, select the “gncaster” service and click on it to get connected to the NTRIP Caster. The system will then display Mount point Source Table.


  7. This source table lists all available mount points (different correction streams) in SLCORSnet
  8. Once successfully connected to a mount point (a correction stream), the rover will start to transmit a NMEA string of its current position to the SLCORSnet control centre.
  9. The system will take this positional information in to consideration and given that the rover is in a good location (no multipath or canopy) and after proper ambiguity fixing, the GNSS receiver should give a fixed solution
  10. Please use connection address and port 2101 to connect to the service.

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