The rover radio is intended for receiving differential corrections. To configure the modem connection select either Receiver, or Controller depending on whose modem will use for communication.
You can set GSM/CDMA modem (Cellular modem) or UHF modem (Radio).
When the receiver's modem is used you can select Internal Radio, or Internal Cellular, or External Radio, or External Cellular.
When the controller's modem is used you can select Internal Radio, or Internal Cellular, or External Cellular.
The dialog content depends on the modem model selected.
To configure the radio modem:
For Internal Radio and Internal Cellular specify the Baud rate for the Port to which the radio is connected.
Note: In some rare cases for modem connection with the "Auto" baud rate selected, the baud rate cannot be set. MAGNET Field displays an error message for this case:
Modem baud rate could not be determined automatically. Please run TRU (see Help for details) or specify baud rate in configuration.
See here how to resolve the issue.