🔍 Key Concepts

• RADAR bearing alignment between the antenna and display • Difference between visual bearings (compass / pelorus) and RADAR bearings • Common causes of consistent bearing error on all targets

💭 Think About

• Is the error the same amount on all targets around the horizon, or only in one sector? What does that suggest about alignment versus a component failure? • If range (distance) looks correct but bearing is wrong, which part of the RADAR system is most likely at fault: timing/sweep, range circuits, or heading/antenna reference? • Would a problem inside the CRT sweep (length or yoke) usually affect bearing only, or would it also distort the picture in other obvious ways?

✅ Before You Answer

• Check whether all targets show approximately the same bearing offset from their visual bearings. • Think about what provides the RADAR with its heading / antenna position reference so the picture can be correctly oriented. • Consider whether options involving internal components (relay, yoke, sweep) would more likely cause loss/distortion of echoes rather than a clean but uniformly shifted picture.