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Question 1 of 20Nw81MQA1UqaB0p42RYiA

What are the transmit and receive frequencies of an aircraft’s mode C transponder operating in the Air Traffic Control RADAR Beacon System (ATCRBS)?

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Question 1 of 20

Nw81MQA1UqaB0p42RYiA

What are the transmit and receive frequencies of an aircraft’s mode C transponder operating in the Air Traffic Control RADAR Beacon System (ATCRBS)?

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🔍 Key Concepts

• Standard ATCRBS / Mode C transponder interrogation and reply frequencies • Difference between MHz (megahertz) and kHz (kilohertz) and which is used for radar beacon systems • Which part of the system (ground radar vs aircraft transponder) does the interrogating (receive) and which does the reply (transmit)

💭 Think About

• First decide: are ATCRBS transponder signals in the MHz or kHz range for radar surveillance? Eliminate any answers that don’t match the typical radar frequency band. • Think about who is ‘asking’ and who is ‘answering’: does the aircraft transponder mainly reply on the higher or lower of the two standard beacon frequencies? • Once you know which frequency is used for interrogation from the ground, you can match that to the aircraft’s receive frequency and the other to its transmit frequency.

✅ Before You Answer

• Confirm that primary and secondary radar/beacon systems use frequencies in the UHF/MHz range, not kHz, for this function. • Identify which standard frequency (1030 or 1090) is associated with interrogations in ATCRBS documentation, and which with replies. • Be sure to match the correct units (MHz vs kHz) in the options; eliminate any that have the wrong order of magnitude.

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Question 1 of 20Nw81MQA1UqaB0p42RYiA

What are the transmit and receive frequencies of an aircraft’s mode C transponder operating in the Air Traffic Control RADAR Beacon System (ATCRBS)?

Back

Question 1 of 20

Nw81MQA1UqaB0p42RYiA

What are the transmit and receive frequencies of an aircraft’s mode C transponder operating in 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

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

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