# Connect to a Public Reference Station

When using a public reference station, select the “Use Public ReferenceStation (NTRIP)” tab. An NTRIP Caster takes data from one or more NTRIP Servers and provides this data to one or more NTRIP Clients. The following parameters must be configured to ensure that SpatialLightHouse properly collects data from a public correction network.

![Use Public ReferenceStation (NTRIP) tab interface](/files/-LSuVrJJlkGPz44rYo3G)

|             |                                                             |
| ----------- | ----------------------------------------------------------- |
| NtripCaster | The hostname or IP address of the NTRIP caster.             |
| Port        | The port number of the NTRIP caster, Default value is 2101. |
| Username    | The user name for the NTRIP caster account.                 |
| Password    | The password for the NTRIP caster account.                  |

## Fetch Sources

This will retrieve a list of available streams from the NTRIP caster. A stream is usually a combination of reference station and differential corrections data.

![List of NTRIP caster streams](/files/-LSuYQKZHBy5Brpz3VqD)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs-6.phoenixlidar.com/rover/theory-and-workflow/reference-station-setup/spatiallighthouse/connect-to-a-public-reference-station.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.