🔍 Key Concepts
• GMDSS (Global Maritime Distress and Safety System) equipment and modern radio technology on ships
• How digital and computer-controlled systems can replace traditional, single‑purpose radios
• The difference between a radio type and a measuring instrument like an SWR meter
💭 Think About
• Which option describes a kind of radio system that can change its function or frequency range by using software instead of changing hardware?
• On a vessel, would an SDR be more likely to be a communication device, a test instrument, or a type of computer memory? Why?
• Which choices sound like they belong to marine communications, and which sound more like general electronics or computing terms?
✅ Before You Answer
• Verify which option clearly names a radio rather than a meter or memory device
• Check which term is commonly used in modern digital and programmable radio systems, especially in GMDSS or other marine comms
• Make sure the choice you pick could realistically appear in a ship’s radio room or integrated bridge system as primary communications gear