The STC circuit:

The STC circuit:

Question 1 of 27070jqaf6LHdjMk2KQA4JBzi

The STC circuit:

Question 1 of 27070

Q

The STC circuit:

🔍 Key Concepts

• STC (Sensitivity Time Control) in marine radar and what part of the picture it mainly affects (very close range or long range?) • The meaning of sea return/sea clutter on a PPI (Plan Position Indicator) scope • The difference between changing receiver sensitivity and changing bearing resolution

💭 Think About

• Think about why small boats often use STC or sea-clutter controls in choppy conditions: what are they trying to reduce on the radar screen? • Does STC make close-in targets easier or harder to see when the sea is rough? How would that affect the appearance of sea echoes near your own ship? • Which control on a radar is normally associated with improving bearing resolution: is it STC, or is it something like beamwidth/antenna characteristics?

✅ Before You Answer

• Verify whether STC increases or decreases receiver gain for very short ranges close to your own vessel. • Confirm that sea return/sea clutter refers to unwanted echoes from waves near the ship, not from distant targets. • Check which option correctly describes an effect on sea return without confusing it with bearing resolution or long-range sensitivity.