🔍 Key Concepts

• Basic RADAR antenna types commonly used on ships • Physical appearance and mounting style of different antenna types (e.g., open array vs. whip vs. TV-style antennas) • Difference between antennas used for RADAR versus for radio communications or VHF

💭 Think About

• Which of these antenna types have you actually seen on a typical ship’s RADAR—think of the long horizontal bar that spins on top of the mast or bridge? • Which of the options are more commonly used for radio communication (like HF/VHF) rather than for RADAR? • Which type can form a narrow horizontal beam suitable for detecting targets around the horizon?

✅ Before You Answer

• Be sure you associate RADAR with an antenna that produces a narrow, rotating horizontal beam • Eliminate any antennas typically used for vertical whip-style radio communications, not for RADAR • Think about which option is commonly seen on modern commercial ships and large yachts as the rotating RADAR scanner