CDC Vol 3, 423 Tactical Data Link Types Flashcards
- Which units commonly use Link 11?
- Naval platforms
- Airborne platforms
- Ground units that need to link with them.
- What polling technique does the network use to manage information exchange among Link 11
participants?
Roll call
- What types of communications systems are primarily used to transmit Link 11B information?
- Landlines
- Microwave
- Troposcatter radio
- Satellite communications
- What functional mission areas does Link 16 support?
NOTE: there are seven
- Joint theater air and missile defense
- Attack operations
- Counter-air
- Interdiction
- Suppression of enemy air defense
- Close air support
- Time-critical targeting prosecution.
- What function of Link 16 decomposes data into message sets transmitted during pre-planned
intervals?
TDMA (Time division Multiple Access)
TDLs are categorized into two categories, what are they?
- Basic Interface Category
- Extended Category
What data links are in the basic interface category?
- Link 16
- Link 11
- Link-11B
What data links are in the extended category?
Any TDL that provides data to the basic interface such as ATDL-1 and Link 1.
Is Link 11 full-duplex or half-duplex/simplex?
Half-duplex/simplex
What are the two modes a unit can enter into Link 11 as?
- Broadcast mode
- Radio silent mode
Since link 11 data is not rebroadcasted, participating units only receive information from senders within ______?
Radio contract range
What equipment must you have to participate in Link 11?
- DTS (Data Terminal Set)
- HF or UHF radio
- A computer with message-processing software
- A common encryption device
What Link 11 equipment acts as a modem?
DTS (Data Terminal Set)
What are the two Link 11 waveform options on some data terminal sets (DTS)?
- CLEW (Conventional Link 11 Waveform)
- SLEW (Single Tone Link 11 Waveform)
What enhanced capability does SLEW provide over CLEW?
- Increased propagation
- A more powerful error detection and correction (EDAC) algorithm
What is the selectable data speed bit rates for Link 11?
2250 or 1364
What message series does Link 11 and Link 11B use?
M-Series
What is a significant drawback of Link 11 and why is it a weakness?
- Susceptible to hostile jamming
- Link 11 is confined to a single frequency
In a Link 11 network, who provides directives and recommendations to all PUs to maximize link effectiveness?
DNCS Data Net Control Station
What is the speed range Link 11B can be set between?
Medium rate of 600 - 2400 bps
Is Link 11B jam resistance?
Yes - jam resistance is inherent in point-to-point circuit connectivity.
What Link 11B unit assignment forwards data between two or more Link 11B units?
FRU (Forward Reporting Unit)
What Link assignment allows a unit to forward data between Link 11 and Link 11B?
FPU (Forward Participating Unit)
Is Link 11B full-duplex or half-duplex?
Full-Duplex
Is Link 11 full-duplex or half-duplex?
Half-Duplex
What is a Link 11B circuit composed of?
- Modem
- Appropriate encryption devices
What is the equipment needed to establish a Link 11B link?
- Modem
- Common encryption device
- Associated cabling
- A patch panel
- Computer with message-processing software
- External connector panel
Who are the primary users of Link 11B?
- Air Force
- Army
- Marine Corps
What are the primary units that use Link 11B?
- AOC
- CRC
- Army brigade-level units
- Marine Corps units
What do Link 11B critical nodes do?
Relay signals between two units when other means of data transfer fail to achieve connectivity.
What date rates does Link 16 operate?
High rates of 26.9 to 107.6 kps
What is the radio transmission and reception component in Link 16?
JTIDS/MIDS (Joint Tactical Information Distribution System/Multifunctional Information Distribution System)
What Link 16 terminals are considered controlled cryptographic items (CCI)?
- MIDS-LVT family terminals
- JTIDS Class 2 terminals
What are they five distinctive environments was J-series message designed for?
- Air
- Land (ground)
- Surface (maritime)
- Space
- Subsurface
What is the waveform and frequency range of Link 16?
960 - 1215 megahertz (MHz)
What communication standard format does Link 16 use?
MIL-STD 6016
What modes of operations are available for Link 16 and what are their ranges?
- Normal Mode & 300 NM
- Extended Mode & 500 NM
Link 16 hopes over ___ frequencies, ___ times a second, spread over the ___ -___ MHz range.
- 51 frequencies
- 77,000 times
- 960-1215 MHz range
What is the standard interval time slot for TDMA in Link 16?
7.8125 milliseconds
What is the timing slot in TDMA for voice, round-trip timing (RTT), and free text messages?
Three, six, or twelve 70-bit words
What is the basic Link 16 communication “circuits”
NPG - Network Participation Groups
What makes Link 15 cryptographically compatible?
Link 16 terminals use of thornton-based secure data unit (SDU)
For Link 16, what does secure data unit (SDU) provide for message security (MSEC)?
- Communications Security (COMSEC)
- Transmission Security (TRANSEC)
In Link 16 what is the basic key for encrypting operational message traffic?
Traffic Encryption Key (TEK)
What data link integrates USAF close air support aircraft with digitized battlefield?
SADL (Situation Awareness Data Link)
What is a data radio based on the EPLRS (Enhanced Position Location Reporting System)?
SADL (Situation Awareness Data Link)
What does SADL process?
- EPLRS
- Joint Variable Message Format (JVMF)
- Link 16 messages
- SADL messages
SADL provides F-16C+ with cooperative engagement capabilities resulting in increased combat efficiency and effectiveness. What F-16C blocks use SADL?
F-16+ = Blocks 25/30/32
What data link provides contention-free fighter-to-fighter, air-to-ground, and ground-to-air communications, facilitating position and status reporting for situation awareness?
SADL (Situation Awareness Data Link)
SADL can provide positions of digitized ground maneuver unites for the Army and Marine Corps through what, respectively?
- Army Tactical Internet
- Marine Corps Tactical Data Net
