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MOD F > MOD F > Flashcards

MOD F Flashcards

1
Q

Wavelength

A

distance between crests of a wave, long=low frequency, short=high frequency

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2
Q

Wave crests

A

the highest points of the wave

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3
Q

Trough

A

the lowest points of the wave

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4
Q

Nomenclature for the Fortezza Plus Card (STE Phones)?

A

KSV-21 ECC

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5
Q

What can obscure LOS?

A

Topographic features, curvature of the Earth, man-made objects, trees

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6
Q

Definition of LOS?

A

Line of Sight is the direct free-space path that exists between two points.

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7
Q

What does STE stand for?

A

Secure Terminal Equipment

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8
Q

What is the best/easiest way to eliminate Fresnel Zone interference?

A

Raise the antenna mounting point.

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9
Q

Different ways to improve LOS?

A

Raise the antenna mounting point.
Locate a different mounting point
Remove obstructions

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10
Q

What is the nomenclature for a AN/PRC-117 Vehicle mounted?

A

AN/VRC-103G

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11
Q

What is the nomenclature for a AN/PRC-150 Vehicle mounted?

A

AN/VRC-104C

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12
Q

The AN/PRC-150 primarily operates in which frequency range?

A

High Frequency Range - 1.6 – 59.9999 MHz

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13
Q

What is the nomenclature for an SKL?

A

AN/PYQ-10

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14
Q

What security level networks can the KG-175D operate on?

A

No level, Unclassified, Classified, Secret, Top Secret (ALL OF THE ABOVE)

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15
Q

How many CIKs can be associated with one KG-175D?

A

3

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16
Q

What is the purpose of the eMCSU (enhanced Micro Central Switching Unit)?

A

Provides the central processing and interface functions for each node. The MCSU electronically interconnects all communication assets physically attached to it.

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17
Q

Track quality (TQ)

A

a numerical value representing the horizontal positional reliability within a 95% confidence level.

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18
Q

Time quality (Tq)

A

a measure of the quality of a terminal’s state of synchronization relative to network time.

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19
Q

High Frequency

A

Radio Frequency range from 1.6 to 29.999 MHz.

Pro’s = transmissions less affected by atmospheric moisture.
Bounces off of ionsphere, further distances

Con’s = physically longer waves requires longer antennas.

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20
Q

Where do you change the MIDS Operation Modes for the radio?

A

In the gui interface in ADSI or CDLI

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21
Q

What forms can wave transmissions take?

A

Light, sound, radio

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22
Q

What is the Normal range for the JTIDS/MIDS radio?

A

300 nautical miles

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23
Q

What is the Extended range for the JTIDS/MIDS radio?

A

500 nautical miles

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24
Q

What is the physical depiction equivalent to the CONMATRX number in the OTL?

A

SLD (Source Link Designator)

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25
Q

What must occur before the MIDS radio will begin fully transmitting messages on the RF network?

A

Fine sync

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26
Q

SINGCARS operates between (blank) and (blank) in 25 KHz increments spanning (blank) channels.

A

30 – 87.975 MHz, 2320 channels, 8 for SC mode and 6 for FH mode

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27
Q

What frequencies are given in the SAT-J segment of the OTL? Also given in the OPTASKLINK when connecting to satellite.

A

Uplink (Downlink comes back from satellite)

28
Q

What are the basic operating functions for the AN/PSC-5?

A

LOS, SATCOM, DAMA 5KHz, DAMA 25KHz

29
Q

What is the nomenclature of the JTT radio?

A

AN/URC-145A

30
Q

Modes MIDS can operate in?

A

Mode 1 – This is normal mode
Mode 2 – No freq hopping, no multi netting, transmissions restricted to 969 Mhz
Mode 4 – No encryption, 969 Mhz, transmissions restricted to 969 Mhz

31
Q

EPLRS operates in what frequency range?

A

UHF - 419.75-450.75

32
Q

Duty Code - 805

A

JICO

33
Q

Duty Code - 812

A

NTR - Net Time Reference

34
Q

Duty Code - 815

A

Initial Intry MIDS Unit

35
Q

Duty Code - 907

A

JREJU - Joint Range Extension Forwarded JTIDS Unit

36
Q

Duty Code - 908

A

JREU - Joint Range Extension Unit

37
Q

Dedicated Access Mode

A

guarantees that a LINK-16 User (JU) has exclusive use of his own assigned TSB

38
Q

Contention Access Mode

A

Each unit randomly selects time slots from a commonly assigned pool for transmission; frequency is determined by Access Rate

39
Q

Time Slot Reallocation Mode

A

allows the network capacity of an NPG to be distributed dynamically based on projected needs of the participants

40
Q

Frequency Ranges/Bands

A

HF: 1.6 – 29.999 MHz
VHF: 30 – 299.999 MHz
UHF: 300 MHz – 3 GHz
EHF: > 3GHz
FM (frequency modulation): 35-40 km, 88 – 108 MHz
AM (amplitude modulated): 535 – 1705 KHz

41
Q

Where can the load files be found in the OPTASKLINK

A

JUDATA

42
Q

Is there a knob on the MIDS that changes the Mode?

A

No

43
Q

EPLRS and JTIDS MIDS uses what communications architecture?

A

TDMA

44
Q

What does the eMCSU use for its primary connection?

A

7s ohm coaxial cable

45
Q

Radio Horizon

A

approx 15% longer than visual horizon.

46
Q

Propagation

A

is an invisible force that enables man to communicate over long distances.

47
Q

Diffraction

A

The principal effect of diffraction extends the radio range beyond the visible horizon by reflecting of the Earth’s troposphere

48
Q

Ducting

A

reflection of the signal between reflective layers, will only occur when the frequency, angle and reflective layers are ideal

49
Q

Critical Angle

A

the angle at which a wave leaves the transmission source in order to successfully refract off the ionosphere

50
Q

Reflection

A

the path of the wave is altered by contact with the ground

51
Q

Skip

A

reflection off of the ionosphere

52
Q

Critical Frequency

A

frequency of a wave that is required for successful reflection off of the ionosphere

53
Q

Fresnel Zone

A

The immediate area near a line-of-sight path. Objects in this area may disturb the signal.

54
Q

Fresnel Effect

A

An object close enough to the signal path, can damage the radio signal. Objects can deflect part of the signal causing a delay in the transmission. Deflected signal can be out of phase reducing or canceling its effect.

55
Q

SKL

A

Simple Key Loader - handles, views, stores and loads secret data, key, Electronic Protection (EP) Data

56
Q

SDU

A

Secure Data Unit - Holds 4 crypto variable pairs, 4 for today and 4 for tomorrow. Total of 8 crypto slots

57
Q

MIDS

A

Multifunction Information Distribution System - a tactical information radio designed to provide communication, navigation, and identification capabilities for application to airborne, land-based, and maritime tactical operations while operating in a Link-16 network.

58
Q

EPLRS

A

Enhanced Position Location Reporting System

59
Q

JTT

A

Joint Tactical Terminal - Provide Connectivity to Users for the Four Major Legacy Intelligence Dissemination Networks. Provide alternate means of communication for users to transmit/receive supporting information

60
Q

TBA

A

Terminal Base Address

61
Q

TDMA

A

: Time Division Multiple Access - Uses time interlacing to provide multiple and apparently simultaneous communication circuits. Participants are assigned specific time periods during which to transmit and in which to receive.

62
Q

FDMA

A

Frequency Division Multiple Access - splits up the frequency band and conceptually assigns a frequency to an individual transmission and (CDMA) allows several transmitters to send information simultaneously, letting multiple radios share the same bandwidth with only the intended receiver having the ability to decode the transmission

63
Q

NDD

A

Network Description Document - explains all the considerations, summarizes all platforms and details each transmission down to the time slot block in which the transmission will occur.

64
Q

IDL

A

Initialization Data Load

65
Q

Max Time Quality if not NTR?

A

14

66
Q

Entry for L16 parameters?

A

Optasklink and NDD

67
Q

Variant for load files in NDD?

A

.x25 and .out

MOD F (1 decks)

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