What is the first step when operating the AN/PRC-150?

Turning on and testing the radio is critical as the first step when operating the AN/PRC-150. This step ensures that the radio is functioning properly before any further actions are taken. Testing the equipment allows the operator to verify that the internal components, battery, and connections are operational. It also confirms that the user can send and receive communications, which is essential for mission success and safety. This preliminary check can help prevent issues later in the operation, allowing for adjustments or repairs if necessary.

Inspecting the equipment, connecting the antenna, and setting the frequency are important tasks as well, but they are typically performed after confirming that the radio is powered and functioning. Therefore, ensuring the radio is operational is the logical starting point in its use.