3-62. What component of the IFF transponder system on the S-3 aircraft provides lobing action to prevent the antenna system from being blanked out during aircraft maneuvers? 1. C-6280(P)/APX 2. SA-1769/A 3. RT-859/APX-72 4. TS-1843/APX 3-63. What component on the S-3 aircraft provides the IFF transponder operation and test controls? 1. C-6280(P)/APX 2. SA-1769/A 3. RT-859/APX-72 4. TS-1843/APX 3-64. What component on the S-3 aircraft provides the GO/NO-GO indications on the IFF transponder control? 1. C-6280(P)/APX 2. SA-1769/A 3. RT-859/APX-72 4. TS-1843/APX 3-65. What is the frequency of received signals for the IFF transponder? 1. 1030 kHz 2. 1090 kHz 3. 1030 MHz 4. 1090 MHz 3-66. On the S-3 aircraft, what component determines the Mode C information pulses for the IFF transponder? 1. The transponder control 2. The transponder RT 3. Airspeed-altitude computer 4. COTAC pressure altimeter 3-67. What is the total number of possible codes available in Mode C IFF? 3-68. When the IDENT function is used in Mode 1 of the IFF transponder, how many total times is the reply pulse train containing the code in use transmitted for each trigger pulse received? 1. One 2. Two 3. Three 4. Four 3-69. When is the SPI pulse present in the reply pulse train in Mode C? 1. When a D4 pulse is present 2. When a D4 pulse is not present 3. When a F2 pulse is present 4. When a F2 pulse is not present 3-70. In an IFF/SIF system, the X-pulse is used for which of the following purposes? 1. Emergencies 2. Timing 3. Helicopters 4. Drones 3-71. The IFF interrogator transmits on what frequency? 1. 1030 kHZ 2. 1090 kHz 3. 1030 MHz 4. 1090 MHz 3-72. What component of the interrogator set generates the initiation and interrogation cycles of the system? 1. RT-868A/APX-76A(V) 2. SN-416A/APX-76A(V) 3. SA-1568A/APX-76A(V) 4. C-7383/APX-76A(V) 3-73. What is the nominal peak power level of the RF pulses generated by the RT-868A/APX-76A(V)? 1. 2,048 2. 2,465 3. 4,096 4. 4,930 1. 1 kW 2. 2 kW 3. 6 kW 4. 8 kW 21