Question

Both ATCRBS and mode S have the same range.

(a) True

(b) False

I have been asked this question in a national level competition.

This interesting question is from Modes S System in section Surveillance Systems, Mapping and Multimode Radars of Avionics

Answer 1

The correct choice is (a) True

Explanation: Mode S system and ATCRBS have the same interrogation frequency and the same reply frequency. The transmitter power output is similar to the ATCRBS transponder as is the receiver sensitivity which ensures that mode S transponders will have similar service ranges as ATCRBS transponders.