What type of control is being used when transmitting using a handheld radio?

When transmitting using a handheld radio, local control is being utilized. Local control refers to the operation of the radio by a licensed operator who is physically present with the equipment. In this scenario, the operator directly manipulates the controls on the handheld radio to communicate, making real-time adjustments as necessary. This is characteristic of handheld radios, where user interaction is integral to functioning.

Other types of control mentioned, like unattended control, may apply to setups where transmissions are made without human oversight, such as remote stations. Automatic control involves systems that operate without human intervention, commonly used in more complex or automated systems. Radio control can be a broad term that may not specifically apply to the direct operation involved with handheld radios. Thus, local control accurately describes the situation of an operator actively managing the communication while in proximity to the radio.