3-11. 3-12. 3-13. 3-14. 3-15. Decrypts the 24-bit data word and sends it to the CDS computer. 1. A 2. B 3. C 4. D Which of the following functions is performed by an antenna coupler? 1.    Amplification of the HF radio signal 2. Impedance matching of the antenna and the radio set 3.    Conversion of atmospheric electromagnetic energy to RF current 4. Coupling of the data terminal set to the radio The size of an antenna is determined by which of the following factors? 1. 2. 3. 4. The operating power The operating frequency The range of the receiver The type of data being transmitted The frequency range of an antenna can be extended by adding which of the following factors? 1.    A resistive load only 2.    A capacitive load only 3.    An inductive load only 4.    Either a capacitive or an inductive  load Which of the following functions is NOT performed by the data terminal set? 1.    Generating the radio key- line  signal 2. Converting digital data to audio tones 3. Encrypting CDS computer data 4. Converting audio tones to digital data 3-16. The data terminal set communicates with the radio set via which of the following devices? 1. The communications switchboard 2. An antenna coupler 3. The cryptographic device 4. The SGS computer 3-17. Which of the following radio frequency modulation methods is used to minimize propagation- caused signal loss during HF Link-11 operations? 1. Quadrature phase-shift modulation 2.    Frequency  modulation 3.    Phase modulation 4.    Amplitude  modulation independent  sideband 3-18. Which of the following individuals is responsible for assigning primary and secondary Link-11 frequencies before the deployment of a task force? 1. The aircraft carrier commanding officer 2. The net control station track supervisor 3. The task force commander 4. The  fleet  CinC 3-19. When a Link-11 net is established, which of the following sequences of operations should be followed to determine readiness of all units to enter the net? 1. Net Test, Net Sync, roll call 2.    Net Sync, Net Test, roll call 3.    Net Sync, Net Test, Broadcast 4. Roll call, Net Test, Net Sync A. Net  Synchronization B. Net  Test C. Roll  Call D. Broadcast E. Short Broadcast F. Radio Silence Figure 3B. 12