6.72.2 Transponders / SSR Radio

Primary Surveillance Radar – Emits pulse and uses echo to calculate position

Secondary Surveillance Radar – Emits interrogation pulse and calculates position based on a response pulse emitted by target aircraft.

Mode A – Transponder Setting – Response pulse contains position information

Mode C – Transponder Setting – Response pulse contains position and altitude information

6.72.2 State the two types of radar currently used in New Zealand
6.72.4 Describe the method of operation of each type of radar
6.72.6 Explain what is meant by transponder Mode A and Mode C.