[DME] What is the function of/name given to the airborne DME transceiver?

Question

BlackTom AI · Accepted Answer

To begin, consider what the airborne DME transceiver is responsible for during a DME exchange. 
Option: Black box — This label is not used for the airborne DME unit. In aviation systems, a 'black box' typically refers to flight recorders, not the DME transceiver's role, so this is not the correct descriptor. 
Option: Receiver — While the airborne DME unit does receive replies from the ground transponder, naming it merely a receiver mischaracterizes its primary function. The key role is to actively initiate queries, not just passively listen. 
Option: Interrogator — This is the established term for the airborne DME transceiver's function. It sends out interrogation signals to the ground station to elicit a response, enabling distance and bearing calculations. The term reflects its proactive role in the measurement process. 
Option: Transmitter — The unit certainly transmits, but in the context of DME naming, the conventional term that captures the overall functional role during operations is 'interrogator' rather than just 'transmitter.' This choice describes a capability rather than the specific operational function used in DME terminology. 
In summary, among the options, 'Interrogator' best matches the standard name for the airborne DME transceiver's function, while the other choices either refer to unrelated concepts or describe only a subset of its capabilities.

25F --Aircraft Navigation Systems (SEC. 501) FINAL Exam ATAC 506 - W25 - Requires Respondus LockDown Browser 25F --Aircraft Navigation Systems (SEC. 501) FINAL Exam ATAC 506 - W25 - Requires Respondus LockDown Browser

[DME] What is the function of/name given to the airborne DME transceiver?

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