The indicated distance from your own vessel...

Question 1 / 27070kZmS3b7qOBxsI0kNJPd4

Question 1 of 27070kZmS3b7qOBxsI0kNJPd4

The indicated distance from your own vessel to a lighthouse is found to be in error. What circuit would you suspect?

Question 1 of 27070

The indicated distance from your own vessel to a lighthouse is found to be in error. What circuit would you suspect?

🔍 Key Concepts

• Radar range measurement and how the set measures distance to a target like a lighthouse • Function of the range ring oscillator versus video amplifier, STC (Sensitivity Time Control), and FTC (Fast Time Constant) • Which circuit would directly affect the numeric range reading, not just target brightness or sea clutter

💭 Think About

• Ask yourself: which circuit actually sets or calibrates the distance scale and range markers on the radar display? • Which circuits mainly control how strong echoes appear close-in (near-range clutter) versus far away, without changing the true distance? • If the range to a solid, fixed target like a lighthouse is consistently wrong on all ranges, what part of the radar must be mis‑timed?

✅ Before You Answer

• Identify which option is responsible for generating accurate range scales / rings on the display • Confirm which options mainly affect echo strength and clutter suppression, not the distance scale itself • Think about what controls the time base between pulse transmission and displayed echo position on the screen

Question 1 of 27070

The indicated distance from your own vessel to a lighthouse is found to be in error. What circuit would you suspect?

Range ring oscillator .

Video amplifier.

STC circuit.

FTC circuit.