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19 Cards in this Set
- Front
- Back
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Q2-1. What does the acronym IFF stands for?
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A2-1. Identification Friend or Foe.
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Q2-2. What are the three basic steps in the identification
process of a typical IFF system? |
A2-2. Challenge, decode, and reply.
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Q2-3. True or False. All naval aircraft contain an
interrogator system. |
A2-3. False.
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Q2-4. What is the pulse spacing of Mode 1?
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A2-4. 2.9 to 3.1 s.
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Q2-5. Of the six modes of IFF operation, which one
is used by military and civilian aircraft control stations? |
A2-5. Mode 3/A.
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Q2-6. What mode IFF is the military encrypted
mode? |
A2-6. Mode 4.
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Q2-7. What is the transmission frequency of the
interrogator? |
A2-7. 1030 MHz.
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Q2-8. In a typical IFF/SIF system, what total
number of codes can be selected in Mode 2? |
A2-8. 4,096.
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Q2-9. The Identification of Position (I/P) pulse is
used for what purpose? |
A2-9. It is used to identify a specific friendly aircraft among other friendly aircraft that
reply with the same code. |
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Q2-10. What mode of IFF is set prior to takeoff by
maintenance personnel? |
A2-10. Mode 2.
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Q2-11. Where are Modes 1 and 3/A selected on the
AN/APX-72 transponder set? |
A2-11. By thumbwheel switches on the front of the control box.
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Q2-12. What part of the APX-72 system provides for
ground or in-flight transponder testing capability? |
A2-12. The Transponder Test Set TS-1843/APX.
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Q2-13. The AN/APX-72 generates a signal of what
frequency when interrogated? |
A2-13. 1090 MHz.
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Q2-14. The interrogator works in conjunction with
what other aircraft system? |
A2-14. The radar.
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Q2-15. What component of the interrogator set is
used to select SIF reply codes for Modes 1, 2, and 3/A? |
A2-15. C-7383/APX-76(V) control box.
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Q2-16. What component monitors the timing
triggers, pre-triggers, gates, and test video and causes the fault indicator lamp on the interrogator control to illuminate when a fault has been detected within the system? |
A2-16. Electronic Synchronizer SN-416/APX-76(V).
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Q2-17. The APX-100 transponder set is available in
what number of configurations? |
A2-17. The system comes in two configurations.
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Q2-18. To respond to Mode 4 interrogations, the IFF
transponder set system requires what additional components? |
A2-18. Transponder Computer KIT-1/TSEC.
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Q2-19. What APX-100 system is referred to as the
rack-mounted configuration? |
A2-19. Receiver/Transmitter RT-1157/APX-100.
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