> For the complete documentation index, see [llms.txt](https://docs-7.phoenixlidar.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs-7.phoenixlidar.com/rover/theory-and-workflow/reference-station-setup/spatiallighthouse/connect-to-a-private-reference-station/output.md).

# Output

## UHF

This tab will activate and configure the reference station’s UHF radio modem.

![UHF tab interface](/files/-LSqQ8xg9bsJo3ARLwHx)

|                                                        |                                                                                                                                                                                                                                                                                                                    |
| ------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| Send differential corrections via integrated UHF modem | Enabling this button will configure the reference station to send differential corrections via the integrated UHF modem.                                                                                                                                                                                           |
| Frequency                                              | The frequency at which the UHF modem will transmit data. This option is disabled unless you provide a password. Due to legal constraints, Phoenix LiDAR Systems will issue a password to the frequency coordinator of your organization. In most countries, a license is required to transmit in the UHF spectrum. |
| Unlock                                                 | This will prompt you to enter in the password to unlock the frequency configuration.                                                                                                                                                                                                                               |
| Channel Spacing                                        | The frequency difference between adjacent allocations in a frequency plan.                                                                                                                                                                                                                                         |
| Protocol                                               | A list of compatible UHF protocols.                                                                                                                                                                                                                                                                                |
| Forward Error Correction                               | Forward Error Correction provides the ability to correct errors without a reverse channel to request the re-transmission of data. Check this box to enable FEC.                                                                                                                                                    |
| TX Power                                               | Specifies the strength of the signal at which the UHF modem will transmit.                                                                                                                                                                                                                                         |

## Cellular

This tab will activate and configure the reference station’s integrated cellular modem.

![Cellular tab interface](/files/-LSqaLA2GjBen17_yXho)

### Send differential corrections via connection service

Enabling this button will configure the reference station to send differential corrections via cellular mode to a server pre-configured within the Network section of SpatialLightHouse’s Local Settings.

![Network section of Local Settings](/files/-LSqelykPKIjugb9aZu8)

|                        |                                                                                                           |
| ---------------------- | --------------------------------------------------------------------------------------------------------- |
| Mode                   | The type of mobile data service used for communication. SpatialLightHouse offers support for GSM or GPRS. |
| APN                    | Access Point Name of the cellular connection.                                                             |
| GSM Number             | Phone number assigned to the cellular modem by the provider.                                              |
| GPRS PPP User/Password | Credentials to enable cellular modem to connect via Point-to-Point Protocol.                              |

## Serial Port

This tab will enable the reference station to transmit differential corrections via the chosen serial port.

![Serial Port tab interface](/files/-LSqhEQErjuiGcchvQq5)

### Send differential corrections via serial port and SpatialLightHouse

Enabling this button will configure the reference station to emit differential corrections via the serial port if supported. This will allow any custom hardware (i.e. an external radio modem) to connect to the primary serial port.