Explanation: Carrier deviation measurement, while important for proper radio operation and avoiding over-modulation, is typically a test performed during equipment type acceptance, manufacturing, or detailed service and repair. It's not a standard required check during a routine annual inspection. In contrast: * **Power output and VSWR (B)** are critical checks. Power output ensures the radio transmits effectively and within limits, while VSWR indicates antenna system health and efficiency. Testing on Channels 6, 13, and 16 covers essential maritime frequencies. * **Frequency tolerance (C)** is a fundamental regulatory requirement. Ensuring the equipment transmits on its assigned frequency prevents interference and ensures reliable communication. * **Operation from all required power sources (D)** is vital for safety, particularly in maritime operations where emergency power sources are crucial. Therefore, basic operational parameters like power, frequency stability, and power source reliability are core inspection items, while detailed modulation characteristics like carrier deviation are not.