What type of encoding is used in an...

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Question 1 of 20eRyRjZozrXnTf6AAETzl

What type of encoding is used in an aircraft’s mode C transponder transmission to a ground station of the Air Traffic Control RADAR Beacon System (ATCRBS)?

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Question 1 of 20

eRyRjZozrXnTf6AAETzl

What type of encoding is used in an aircraft’s mode C transponder transmission to a ground station of the Air Traffic Control RADAR Beacon System (ATCRBS)?

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🔍 Key Concepts

• Mode C transponder purpose and what information it sends to ATC • Basic idea of pulse position modulation (PPM) vs. amplitude or phase modulation • How older ATCRBS (beacon system) replies are structured (discrete pulses in time slots)

💭 Think About

• Think about whether a Mode C reply is a continuous radio signal being varied, or a series of short pulses in specific time locations. • Which of the answer choices best matches a scheme where information is carried by when a pulse occurs rather than its strength or phase? • Ask yourself: are Mode A/C replies digital pulses or an analog-modulated carrier?

✅ Before You Answer

• Confirm that ATCRBS Mode A/C replies are made up of discrete pulses at specific time positions. • Check which modulation type uses timing/position of pulses to encode data, not their amplitude or phase. • Eliminate any answer that clearly refers to analog carrier modulation instead of digital pulse timing.

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Question 1 of 20eRyRjZozrXnTf6AAETzl

What type of encoding is used in an aircraft’s mode C transponder transmission to a ground station of the Air Traffic Control RADAR Beacon System (ATCRBS)?

Back

Question 1 of 20

eRyRjZozrXnTf6AAETzl

What type of encoding is used in an aircraft’s mode C transponder transmission to a ground station of the Air Traffic Control RADAR Beacon System (ATCRBS)?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

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