1) In order to indicate an emergency situation, the aircraft Secondary Surveillance Radar (SSR) transponder should be set to:
2) In order to indicate radio failure the aircraft SSR transponder should be selected to code:
3) In order to indicate unlawful interference with the planned operation of the flight, the aircraft Secondary Surveillance Radar (SSR) transponder should be selected to:
4) The ATC transponder system,excluding Mode S, contains :
5) The frequency of an SSR ground transmission is: