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36 Cards in this Set
- Front
- Back
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_______ is the process for transmitting two or more signals over a common path by allocating a different time itnerval for the transmission of each channel.
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Time Division Multiplexing
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What receives and demodulates the input from four amplifier converters and provies a 1200 BPS output for the Demultiplexer?
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MD900/SSR-1
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What is the baseband equipment in the SHF System that normally provides 16 full duplex I/O ports for digital communications?
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FCC-100 Multiplexer
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This can accommodate up to 2000 nodes with link speeds ranging from 4.8Kbs to 2.048 Mbps.
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Timeplex Link/2+ System
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What does C4I stand for?
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Command Control Computer and Intellegence.
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Describe an active satellite.
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Amplifier recieved signal and retransmit them back to earth.
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According to satellites,what is synchronous orbit?
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Satellites travels at the same speed as earth rotation, seen motionless in the sky.
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What is Perigee?
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point of which the satellite is closest to the center of the earth.
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All versions of this either operate in Line-Of-Sight or SATCOM mode.
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AN/WSC-3
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How does a passive satellite work?
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Reflects radio signals back to Earth.
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The area upon the earth in which a satellite's signal can be received is known as what?
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Foot Print
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The uplink frequencies of the WSC-3 are what?
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292.2-311.6 Mhz
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This is known as the angular position perpendicular to the earth's surface.
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Elevation
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The downlink frequencies of the WSC-3 are what?
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248.5-270.1 Mhz
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What transceiver is issued for Antisubmarine Warfare Information Exchange Subsystem (ASWIXS)?
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AN/ARC-143 UHF
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This requires the known positions of the satellite and the angles of azimuth and elevation.
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Tracking
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DSCS links are designed to provide what?
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High capacity, point-to-point service under normal conditions and to maintain the minimum required cirucuits during jamming.
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COTS stands for what?
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Commercial off the Shelf
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AN/FCC-100(V)7 Multiplexer/Demultiplexer provides how many full duplex I/O ports?
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16
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This is used for general purpose and/or bulk encryption and decryption devices for tactical ground mobile and fixed plant applications.
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KG-194
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What system provides worldwide, jam resistant,survivable and low probability of intercept.
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EHF SATCOM
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AN/USC-38(V) povides how many transmit and receive, and how many receive-only communications ports for secure voice or data circuits.
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8 transmit, 4 receive
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DAMA stands for what?
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Demand Assigned Multiple Access
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What is the shoreside and afloat side of the UHF SATCOM baseband subsystems.
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AN/ESC-5,AN/WSC-3
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This increases the number of subsystems, or users, on one 25kHz satellite channel.
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TD-1271
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Each frame of the DAMA Subsystem time slot is how many seconds in length.
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1.386 seconds
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The basic format has each frame subdivided into how many time slots.
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7
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This provides the subscriber units with information as to system timing, configuration and control of a particular satellite RF channel.
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CCOW
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This is the time slot used for transmission from the subscriber unit to the channel controller.
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RCCOW
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Link Test Slot does what for the satellite link.
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Perform error analysis and evaluate performance.
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Typical circuits which may be used on DAMA are what?
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NAVMAC/CUDIX,SATHICOM,TTY Circuits
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A KGV-11 crypto equiptment will save all memory variables when the MUX is turned off if put into STBY within how many seconds?
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90 Seconds
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What are the 6 purposes of the SATHICOM circuit?
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Allow ships to report emergencies, Intended for tactical use, Half duplex, Net control by NCTAMS/NCTS, Interface capability into military communication system, Circuit discipline
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FSB stand for what?
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Fleet Satellite Broadcast
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The AM-6534 is to be located within how many feet of the AS-2815 antenna.
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10 feet
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What is the simultaneous transmission of two or more signals within a single RF carrier?
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Multiplexing
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