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What is the difference between Mode S transponders that have diversity and non-diversity?

April 26, 2017Diversity mode transponders

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What is the difference between Mode S transponders that have diversity and non-diversity?

2 Answers

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Some Mode S transponders must have antenna diversity to be used with cerain TCAS operations. Antenna diversity provides air-to-air surveillance and communication by utlilizing two antennas. One antenna is mounted on the top and one on the bottom. Antenna selection in the TCAS system is automatic and accomplished on the basis of the realtive strengths of the detected interrogation signals. Therefore, this antenna selection and installation provides complete surveillance and potential for the TCAS system to function properly at all times.

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Posted

Answer Some Mode S transponders must have antenna diversity to be used with cerain TCAS operations. Antenna diversity provides air-to-air surveillance and communication by utlilizing two antennas. One antenna is mounted on the top and one on the bottom. Antenna selection in the TCAS system is automatic and accomplished on the basis of the realtive strengths of the detected interrogation signals. Therefore, this antenna selection and installation provides complete surveillance and potential for the TCAS system to function properly at all times.