ATO2 Navy Advancement
What information can a DIFAR sonobuoy provide that a LOFAR sonobuoy
cannot? - CORRECT ANSWER-Submarine bearing.
Which of the following sonobuoys provides water temperature data? - CORRECT
ANSWER-BT sonobuoys
The OTPI system provides what information to the USW pilot? - CORRECT
ANSWER-Sonobuoy bearing information with respect to aircraft heading.
What type of naval aircraft employs the AN/ASQ-13F dipping sonar system? -
CORRECT ANSWER-SH60-F
On a dipping sonar system, what component generates and transmits sound
energy into the water? - CORRECT ANSWER-The transducer.
What does the acronym IFF stands for? - CORRECT ANSWER-Identification
Friend or Foe
What are the three basic steps in the identification process of a typical IFF
system? - CORRECT ANSWER-Challenge, decode, and reply
True or False. All naval aircraft contain an interrogator system. - CORRECT
ANSWER-False
What are the two main factors that affect the velocity of sound in seawater? -
CORRECT ANSWER-The temperature and salinity of the water.
A sound wave traveling from an area of warm water into an area of cold water will
be affected in what way? - CORRECT ANSWER-It will bend toward the area of
cold water.
Sonobuoys that transmit an acoustic pulse and detect a resulting echo are
classified as what type of sonobuoy? - CORRECT ANSWER-Active sonobuoys
Sonobuoys equipped with an EFS system have what capability? - CORRECT
ANSWER-The capability of selecting channel, life and depth settings
What is the pulse spacing of Mode 1? - CORRECT ANSWER-2.9 to 3.1
microseconds
, Of the six modes of IFF operation, which one is used by military and civilian
aircraft control stations? - CORRECT ANSWER-Mode 3/A
What mode IFF is the military encrypted mode? - CORRECT ANSWER-Mode 4
What is the transmission frequency of the interrogator? - CORRECT ANSWER-
1030MHz
In a typical IFF/SIF system, what total number of codes can be selected in Mode
2? - CORRECT ANSWER-4096
The Identification of Position (I/P) pulse is used for what purpose? - CORRECT
ANSWER-It is used to identify a specific friendly aircraft among other friendly
aircraft that reply with the same code.
What mode of IFF is set prior to takeoff by maintenance personnel? - CORRECT
ANSWER-Mode 2
Where are Modes 1 and 3/A selected on the AN/APX-72 transponder set? -
CORRECT ANSWER-By thumbwheel switches on the front of the control box.
What part of the APX-72 system provides for ground or in-flight transponder
testing capability? - CORRECT ANSWER-The Transponder Test Set TS-1843/APX
The AN/APX-72 generates a signal of what frequency when interrogated? -
CORRECT ANSWER-1090 MHz
The interrogator works in conjunction with what other aircraft system? -
CORRECT ANSWER-The radar.
What component of the interrogator set is used to select SIF reply codes for
Modes 1, 2, and 3/A? - CORRECT ANSWER-C-7383/APX-76(V) control box
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? - CORRECT ANSWER-Electronic
Synchronizer SN-416/APX-76(V)
The APX-100 transponder set is available in what number of configurations? -
CORRECT ANSWER-The system comes in two configurations.
To respond to Mode 4 interrogations, the IFF transponder set system requires
what additional components? - CORRECT ANSWER-Transponder Computer KIT-
1/TSEC
What information can a DIFAR sonobuoy provide that a LOFAR sonobuoy
cannot? - CORRECT ANSWER-Submarine bearing.
Which of the following sonobuoys provides water temperature data? - CORRECT
ANSWER-BT sonobuoys
The OTPI system provides what information to the USW pilot? - CORRECT
ANSWER-Sonobuoy bearing information with respect to aircraft heading.
What type of naval aircraft employs the AN/ASQ-13F dipping sonar system? -
CORRECT ANSWER-SH60-F
On a dipping sonar system, what component generates and transmits sound
energy into the water? - CORRECT ANSWER-The transducer.
What does the acronym IFF stands for? - CORRECT ANSWER-Identification
Friend or Foe
What are the three basic steps in the identification process of a typical IFF
system? - CORRECT ANSWER-Challenge, decode, and reply
True or False. All naval aircraft contain an interrogator system. - CORRECT
ANSWER-False
What are the two main factors that affect the velocity of sound in seawater? -
CORRECT ANSWER-The temperature and salinity of the water.
A sound wave traveling from an area of warm water into an area of cold water will
be affected in what way? - CORRECT ANSWER-It will bend toward the area of
cold water.
Sonobuoys that transmit an acoustic pulse and detect a resulting echo are
classified as what type of sonobuoy? - CORRECT ANSWER-Active sonobuoys
Sonobuoys equipped with an EFS system have what capability? - CORRECT
ANSWER-The capability of selecting channel, life and depth settings
What is the pulse spacing of Mode 1? - CORRECT ANSWER-2.9 to 3.1
microseconds
, Of the six modes of IFF operation, which one is used by military and civilian
aircraft control stations? - CORRECT ANSWER-Mode 3/A
What mode IFF is the military encrypted mode? - CORRECT ANSWER-Mode 4
What is the transmission frequency of the interrogator? - CORRECT ANSWER-
1030MHz
In a typical IFF/SIF system, what total number of codes can be selected in Mode
2? - CORRECT ANSWER-4096
The Identification of Position (I/P) pulse is used for what purpose? - CORRECT
ANSWER-It is used to identify a specific friendly aircraft among other friendly
aircraft that reply with the same code.
What mode of IFF is set prior to takeoff by maintenance personnel? - CORRECT
ANSWER-Mode 2
Where are Modes 1 and 3/A selected on the AN/APX-72 transponder set? -
CORRECT ANSWER-By thumbwheel switches on the front of the control box.
What part of the APX-72 system provides for ground or in-flight transponder
testing capability? - CORRECT ANSWER-The Transponder Test Set TS-1843/APX
The AN/APX-72 generates a signal of what frequency when interrogated? -
CORRECT ANSWER-1090 MHz
The interrogator works in conjunction with what other aircraft system? -
CORRECT ANSWER-The radar.
What component of the interrogator set is used to select SIF reply codes for
Modes 1, 2, and 3/A? - CORRECT ANSWER-C-7383/APX-76(V) control box
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? - CORRECT ANSWER-Electronic
Synchronizer SN-416/APX-76(V)
The APX-100 transponder set is available in what number of configurations? -
CORRECT ANSWER-The system comes in two configurations.
To respond to Mode 4 interrogations, the IFF transponder set system requires
what additional components? - CORRECT ANSWER-Transponder Computer KIT-
1/TSEC
