What type of control is being used for a repeater when the control operator is not present at a control point?

The correct answer is automatic control. This type of control applies when a repeater operates without a control operator present at a control point. Automatic control typically means that the repeater can function independently, managing its operations based on preset configurations and protocols. In the context of ham radio, repeaters often use automatic control to facilitate continuous operation, allowing for users to access the repeater without needing an operator to be there to manually manage its functions.

Local control refers to the situation where an operator is present and can manually operate the system directly at the repeater location. Remote control indicates that an operator can control the repeater from a distance, usually via a control link, but still requires the operator's intervention to manage the system. Unattended implies that the operation runs without supervision but does not accurately confer the level of control involved compared to automatic control where the system functions autonomously based on programmed settings.