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41 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Of the two terms listed below,
which one refers to reflection of radio signals back to earth by a satellite? |
PASSIVE
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Which term refers to reception
and retransmission? |
ACTIVE
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Which of the following terms
refers to transmissions received from a satellite? |
DOWNLINK
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SATCOM links are only slightly
affected by what phenomena associated with hf propagation difficulties? |
Atmospheric
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Trained crews can set up what
type of satellite earth terminals within hours to establish communications in remote areas? |
MOBILE
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Of the following factors,
which, if any, limit the use of a satellite communications system? |
Orbital parameters and
technical characteristics |
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What purpose does
CUDIXS/NAVMACS serve? |
Provides a communications
network for transmitting general-service message traffic between ships and shore installations |
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How many NCTAMS have primary
responsibility for communications via satellite? |
Four
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LANT: NORFOLK, VA MED: NAPLES, ITALY WESTPAC: GUAM EASTPAC: HAWAII
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Subsystems consist of two
parts. What are they? |
Baseband equipment; rf
terminal |
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In modes 1 through 6, what are
the uplink and downlink frequency bands used in Fleet Satellite Broadcast? |
Shf; uhf
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What system do subscribers use
to receive Fleet Satellite Broadcast? |
AN/SSR-1
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What is the minimum number of
broadcast channels that NAVMACS guards automatically? |
Four
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What is the bandwidth (in kHz)
of the satellite channels allocated to CUDIXS/NAVMACS? |
25
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What term is associated with a
submarine commander’s ability to receive messages via satellite at scheduled intervals? |
Group broadcasts
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Secure voice uses digitized
voice with a 3-kHz voice channel. What type of voice modulation does this describe? |
Narrowband
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When using Secure Voice, a ship
must contact what authority before initiating communications with a shore command? |
Voice controller
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Which of the following is a
subsystem specifically designed for special intelligence communications? |
TACINTEL
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TADIXS-equipped surface ships
and submarines operate in what mode(s)? |
Receive only
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What subsystem is used in
conjunction with TADIXS to transmit OTH-T data from the fleet to other ships and shore commands? |
OTCIXS
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Because the reception of TADIXS
information by a ship does not require an acknowledgement, the ship can l operate in what type of environment and still receive message traffic? |
Emission control
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What system was developed to
multiplex several users on one 25-kHz satellite channel? |
DAMA
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What term is used to describe
how the Demand Assigned Multiple Access data stream is formatted? |
Frame
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What are all DAMA multiplexer
transmit times referenced to? |
The satellite
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Which of the following
equipments is used as the DAMA multiplexer? |
TD-1271B/U
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Who performs day-to-day control
and operation of naval satellite communications assets? |
Naval Computer and
Telecommunications Command |
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Of the 23 uhf communications
channels each FLTSATCOM satellite has, how many one dedicated to Navy use? |
10
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How many FLTSATCOM satellites
have ehf packages installed? |
TWO
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LEASAT satellites have fewer
25-kHz channels than FLTSATs. What ground-based system do they use to maintain communications efficiency? |
DAMA
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The AN/FSC-79 satellite
communications terminal transmits on what band? |
SHF
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What is the replacement
satellite for GAPFILLER, FLTSATCOM, and LEASAT? |
UHF F/O
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Which of the following is
another term used to describe the shf communications band? |
X-band
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The AN/WSC-5(V) uhf transceiver
is capable of using differentially encoded phaseshift- keying and what other type of modulation? |
FM
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Which of the following radios
is the primary shipboard los and satellite transceiver? |
AN/WSC-3
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The AN/WSC-3 transceiver has
two rf output levels. One of these is 30 watts. What is the other rf output level? |
100 WATTS
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What shipboard system is used
to receive Fleet Satellite Broadcast? |
AN/SSR-1
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Which of the following is a
spread spectrum type modem and is used with the AN/FSC-79 satellite communications terminal? |
OM-51A/FR
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Of the two processors listed
below, which one is used in the TADIXS subsystem? |
AN/UYK-44(V)
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The AN/USQ-69(V) data terminal
set is currently used with what two subsystems? |
TACINTEL/NAVMACS
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Audio digital converter
CV-3333/U is used primarily as an analog-to-digital converter for what type of communications? |
Analog voice
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Where are the system interface
connectors installed on the Electrical Equipment Rack CY-7597/WSC-3? |
On the top panel
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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? |
14
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