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Home > Exam Questions > ATPL - Airline Transport Pilot Licence > Radio Navigation > For conventional civil SSR, excluding Mode S and military modes, which statement is correct?

141 - ATPL Question Bank in English - For conventional civil SSR, excluding Mode S and military modes, which statement is correct?

Question 141 - Radio Navigation - ATPL - Airline Transport Pilot Licence

Four modes, each 4096 codes

The principal modes are A and C; Mode A has 4,096 identity-code combinations, while Mode C encodes pressure altitude.

Four modes, each 1024 codes

Two modes, each 1024 codes

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