Term
| What type of equipment is used to coordinate the activities of fleet units by linking them with each other and shore stations? |
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Definition
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Term
| Radio is the transmission and reception of electronic impulses or signals through space by means of what type of waves? |
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Definition
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Term
| Who is ulimately responsible for safety? |
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Definition
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Term
| What are the basic requirements of a communications system? |
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Definition
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Term
| AN/UCC-1, AN/URA-17, and CV-2460 are examples of what type of shipboard equipment? |
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Definition
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Term
| What frequency band has limited naval use? |
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Definition
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Term
| What does the abbreviation "los" commonly mean? |
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Definition
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Term
| The super-high-frequency band used extensively in what type of communications? |
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Definition
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Term
| What type of modulation is especially suited for use in time-division multiplexing? |
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Definition
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Term
| For modern communication needs, CW is not a preferred method. Why is this true? |
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Definition
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Term
| The emission class of an rf transmitter is based on what characteristic? |
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Definition
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Term
| In an FM transmitter, the audio signal shifts the carrier frequency in what network? |
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Definition
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Term
| Which of the four receiver functions invloves extraction of the modulation from the rf signal? |
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Definition
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Term
| Which of the four receiver characteristics require compromise because of bandpass requirements? |
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Definition
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Term
| What term is used to describe receiver amplification? |
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Definition
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Term
| The term "dBm" is based on what standard reference level? |
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Definition
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Term
| How many radio set controls can be paralleled to one transmitter/receiver group? |
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Definition
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Term
| To transfer control of switched circuits to another transmitter or receiver switchboard, you should use what switch position? |
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Definition
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Term
| What term is used for a machine that operates as a single-phase transformer? |
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Definition
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Term
| Extremely-low-frequency transmission is primarily utilized by what? |
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Definition
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Term
| The very-low-frequency receive system is designed to receive what types of signals? |
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Definition
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Term
| HF communications from shorebased transmitters to ships at sea using frequency and space diversity is an example of what type of system? |
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Definition
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Term
| What would you use an AN/URA-38 for? |
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Definition
| matching a transmitter's output impedance to and antenna's input impedance |
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Term
| The AN/VRC-80 is not just a vhf transmitter or receiver. What is the name given to a piece of equipment that performs both functions? |
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Definition
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Term
| During UHF secure voice transmission, the operator uses a secure voice remote phone unit. What is the common term for this unit? |
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Definition
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Term
| What term isnormally used for microwave transmitter input signal? |
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Definition
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Term
| In a microwave transmitter, the linearize couples a portion of the output power back to the klystron. This allows for modulation densities as high as 1200 channels and copmensates for what klystrong deficiency? |
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Definition
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Term
| In a typical microwave receiver, what is the standard intermediate frequency? |
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Definition
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Term
| What methods are usually used for microwave communications? |
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Definition
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Term
| By what method can you increase the maximum number of intelligible signals transmitted on a single path? |
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Definition
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Term
| What communication method involves subdividing a channel into smaller segments of equal size and placing a signal in each subchannel? |
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Definition
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Term
| How many crypto and plain subsystems are used within SAS? |
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Definition
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Term
| One mode of teletypewriter operation is the synchronous mode. What other mode is used for basic teletypewriter operation? |
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Definition
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Term
| What is the name of the five unit code that includes mark and space signals and is used in teletypewriter operation? |
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Definition
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Term
| What problem is reduced by not using start and stop signals in the synchronous teletypewriter mode? |
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Definition
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Term
| What device is used to change tty dc pulses into mark and space signals to modulate the transmitter carrier wave? |
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Definition
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Term
| The Navy's two basic RATT systems are AFTS and RFCS. What is the RFCS system commonly called? |
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Definition
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Term
| What device provides looping current for the tty? |
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Definition
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Term
| What is/are used to interconnect all the tty equipment in any configuration needed? |
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Definition
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Term
| During unpatching, pulling which plug from its tty panel jack first will produce a dangerous dc voltage on the exposed plug? |
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Definition
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Term
| How many rotary switch positions will you find on a remote transmitter control unit? |
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Definition
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Term
| What type of frquency diversity is used for multichannel? |
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Definition
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Term
| What method should you use to tranmit printed text? |
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Definition
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Term
| In which of the following publications can you find information on TEMPEST requirements? |
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Definition
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Term
| What is the desgnator of any conductor inteded to carry classified plain language terminating in RED equipment or the RED side of crypto equipment? |
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Definition
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Term
| The AN/CRT-3A is known as what? |
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Definition
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Term
| What radio is particularly useful during tactical black-out operations? |
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Definition
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Term
| What radio has frequency hopping capability? |
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Definition
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Term
| The use of frequency hopping has certain advantages. One advantage is that the signal is difficult to detect. How is this accomplished? |
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Definition
| no signal carrier is used |
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Term
| What system was specifically designed to provide solutions to equipment planning by automatically determining the best system that each participant in a communications link should use? |
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Definition
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Term
| What term refers to reception and retransmission? |
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Definition
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Term
| What term refers to transmissions received from a satellite? |
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Definition
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Term
| SATCOM links are only slightly affected by what phenomena associated with hf propagation difficulties? |
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Definition
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Term
| Trained crews can set up what type of satellite earth terminals within hours to establish communications in remote areas? |
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Definition
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Term
| How many NCTAMS have primary responsibility for communications via satellite? |
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Definition
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Term
| What system do subscribers use to receive Fleet Satellite Broadcast? |
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Definition
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Term
| What is the minimum number of broadcast channels that NAVMACS guards automatically? |
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Definition
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Term
| What is the bandwidth (in kHz) of the satellite channels allocated to CUDIXS/NAVMACS? |
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Definition
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Term
| What term is associated with a submarine commander's ability to receive messages via satellite at scheduled intervals? |
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Definition
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Term
| Secure voice uses digitized voice with a 3-kHz voice channel. What type of voice modualtion does this describe? |
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Definition
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Term
| When using Secure Voice, a ship must contact what authority before initiating communicaitons with a shore command? |
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Definition
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Term
| What is a subsystem specifically designed for special intelligence communications? |
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Definition
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Term
| TADIXS-equipped surface ships and submarines operate in what mode(s)? |
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Definition
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Term
| What subsystem is used in conjunction with TADIXS to transmit OTH-T data from the fleet to other ships and shor commands? |
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Definition
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Term
| What system was developed to multiplex several users on one 25-kHz satellite channel? |
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Definition
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Term
| What term is used to describe how the Demand Assigned Multiple Access data stream is formatted? |
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Definition
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Term
| In the DAMA multiplexed data stream, which slot is used to test for communications error? |
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Definition
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Term
| What are all DAMA multiplexer transmit times referenced to? |
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Definition
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Term
| What is the TD-1271B/U used as? |
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Definition
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Term
| Who performs day-to-day control and operation of naval satellite communications assets? |
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Definition
| Naval Computer and Telecommunications Command |
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Term
| How many FLTSATCOM satellites have ehf packages installed? |
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Definition
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Term
| LEASAT satellites have fewer 25-kHz channels than FLTSATs. What ground-based system do they use to maintain communications efficiency? |
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Definition
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Term
| What is the replacement satellite for GAPFILLER, FLTSATCOM, and LEASAT? |
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Definition
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Term
| The AN/FSC-79 satellite communications terminal transmits on what band? |
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Definition
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Term
| What is another term used to describe the shf communications band? |
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Definition
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Term
| The AN/WSC-5(V)uhf transceiver is capable of using differentially encoded phaseshift-keying and what other type of modulation? |
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Definition
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Term
| What radio is the primary shipboard los and satellite transceiver? |
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Definition
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Term
| What shipbard system is used to receive Fleet Satellite Broadcast? |
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Definition
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Term
| What is a spread spectrum type modem and is used with the AN/FSC-79 satellite communications terminal? |
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Definition
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Term
| The AN/USQ-69(V) data terminal set is currently used with what two subsystems? |
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Definition
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Term
| Audio digital converter CV-3333/U is used primarily as an analog-to-digital converter for what type of communications? |
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Definition
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Term
| Where are the system interface connectors installed on the Electrical Equipment Rack CY-7597/WSC-3? |
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Definition
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Term
| DAMA-equipped shore installations use the OK-481(V)2/FSC control Monitor Group to interface TD-1271B/Us, AN/WSC-5(V)s, and baseband equipment. It can accommodate up to how many TD-1271B/Us? |
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Definition
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Term
| Link-11 is designted as what types of tactical data information link? |
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Definition
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Term
| Link-11 communications can operate with what radio? |
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Definition
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Term
| The size of an antenna is determined by what? |
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Definition
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Term
| The frequency range of an antenna can be extended by adding wat factor? |
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Definition
| either a capacitive or an inductive load |
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Term
| What individual is responsible for assigning primary and secondary Link-11 frequencies before the deployment of a task force? |
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Definition
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Term
| Net Sync continuously broadcasts what type of signals? |
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Definition
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Term
| When the stored sync mode is operating, the picket station uses what signals to establish a time base? |
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Definition
| sync signal recieved from NCS |
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Term
| The preamble of a Link-11 message consists of a total of how many frames? |
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Definition
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Term
| During transmission of the preamble, the 605-Hz tone is transmitted at what power level? |
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Definition
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Term
| To enable the DTS to detect frame transitions during the preamble, the 2915-Hz sync tone is phase shifted how many degrees at each frame? |
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Definition
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Term
| Exactly how many data bits are contained in each Link-11 information frame? |
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Definition
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Term
| The two frames following a control stop code indicate what? |
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Definition
| the next picket address in the roll call |
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Term
| The DTS operates in full duplex when it performs what operations? |
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Definition
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Term
| The six hamming bits added to the data word enables the DTS to correct what maximum number of data bits? |
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Definition
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Term
| The DTS develops a composite signal consisting of what total number of grequency division multiplexed audio-frequency tones? |
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Definition
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Term
| Bits 4 and 5 of a 30-bit data word are carried by what audio tone frequencies? |
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Definition
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Term
| In a single frame, the DTS can tolerate what maximum phase shift errors without generating an error code? |
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Definition
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Term
| What Link-11 signal allows the receiving unit to correct errors caused by the relative motion between the sending and receiving units? |
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Definition
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Term
| When the DTS is in the OPERATE mode, exactly how many fault sensing sensors can cause the SUMMARY FAULT lamp to light? |
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Definition
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Term
| When the SIDEBAND SELECT switch is in the DIV position, which sideband signal is processed for input to the computer? |
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Definition
| The combination of the USB and LSB signals |
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Term
| During normal Link-11 operations, the DATA RATE switch on the mode control panel should be in what position? |
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Definition
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Term
| During normal Link-11 operations, the DATA RATE switch on the mode control panel should be in what position? |
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Definition
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Term
| The SYNC MODE switch on the mode control panel is used in conjunction with what switch on the TADIL A control panel? |
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Definition
| TIMING STORED/CORRECTED switch |
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Term
| The NET BUSY indicator of the TADIL A control panel is activated by what signal? |
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Definition
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Term
| the SYNC COMPT indicator is lighted after the DTS has achieved what condition? |
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Definition
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Term
| With a single address control indicator, and NCS platform can control what maximum number of participating units? |
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Definition
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Term
| Data exchange between the Link-11 DTS and the CDS computer is controlled by the DTS using what control signal protocols? |
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Definition
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Term
| When the DTS recongized own station address, it transmits what signal first? |
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Definition
| the frst frame of the preamble |
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Term
| What event takes place when the CDS computer does not answer an ODR from the DTS within the specified time limit? |
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Definition
| The DTS generates the stop code |
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Term
| What even occurs if an interrogated picket station does not answer an initial interrogations from the NCS within 15 frame intervals? |
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Definition
| NCS retransmits the interrogation to the unit that did not reply |
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Term
| During receive operations, exactly how many EDAC bits are extracted from the received data tones? |
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Definition
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Term
| The EDAC bits enable the DTS to correct a total of how many received bit errors? |
|
Definition
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Term
| When operating the Link-11 with a UHF radio set, you should place the SIDEBAND SELECT switch in what position only? |
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Definition
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Term
| When the NCS enters dummy PUs, what net conditions will exist, if any? |
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Definition
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Term
| A single broken line in the switchboard between the DTS and the crypto device could cause what problem? |
|
Definition
| All bits randomly set to a logic "1" or a logic "0" |
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Term
| The multi-station POFA is run in what mode? |
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Definition
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|
Term
| When a multi-station POFA is run, what total number of data words are in each block of data transmitted? |
|
Definition
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