ESWS COMMS

Question 1

What is the frequency range for High Frequency (HF)?

Answer 1

3 MHz - 30 MHz

HF is commonly used for long-distance communication.

Question 2

What is the frequency range for Very High Frequency (VHF)?

Answer 2

30 MHz - 300 MHz

VHF is often used for television broadcasts and two-way radios.

Question 3

What is the frequency range for Ultra-High Frequency (UHF)?

Answer 3

300 MHz - 3 GHz

UHF is used for mobile phones, satellite communications, and television broadcasting.

Question 4

What is the frequency range for Super High Frequency (SHF)?

Answer 4

3 GHz - 30 GHz

SHF is commonly used for radar and satellite communications.

Question 5

What is the frequency range for Extremely High Frequency (EHF)?

Answer 5

30 GHz - 300 GHz

EHF is used in advanced communication systems including some satellite communications.

Question 6

How many total transmitters are used in HF Communications?

Answer 6

9 TOTAL

Includes 8 OT-198 Exciters (Broadband) and 1 OT-204 (Narrowband).

Question 7

How many receivers are utilized in HF Communications?

Answer 7

18 R-2557’s

R-2557’s are used for receiving HF signals.

Question 8

What types of antennas are used in HF Communications?

Answer 8

35ft Whip, 2 Twin Whip, 2 ATG Receive only, 2 Fan Wires

These antennas facilitate various communication needs.

Question 9

What are the capabilities of HF Communications?

Answer 9

• Secure/Unsecure Voice/data
• Long haul, over the horizon

HF communications can support both secure and unsecure transmissions.

Question 10

How many total transceivers are used in UHF Communications?

Answer 10

18 TOTAL

Includes 14 WSC 3v7, 2 WSC 3v11, 2 WSC 3v17.

Question 11

What are the capabilities of UHF Communications?

Answer 11

• Line of Sight
• Have quick
• Satellite communications (SATCOM)

UHF is essential for immediate communication needs.

Question 12

How many couplers are used in UHF Communications?

Answer 12

4 OA-9123

Couplers are necessary for connecting transceivers to antennas.

Question 13

What types of transceivers are used in VHF Communications?

Answer 13

GRC-211 (2), GRC 171 (2)

Total of 4 transceivers for VHF operations.

Question 14

What are the capabilities of VHF Communications?

Answer 14

• Line of Sight
• Mobile Comms (GREEN GEAR)
• Emergency Comms
• IAD (international air distress) 121.5 MHz
• MAD (military air distress) 243 MHz

VHF is crucial for various emergency and mobile communication needs.

Question 15

What does SHF stand for in communications?

Answer 15

Super High Frequency

SHF is a frequency range in the electromagnetic spectrum used for various communication applications.

Question 16

What is the nomenclature for the Navy Multiband Terminal used for SHF communications?

Answer 16

AN/WSC 9 V2 NMT

This terminal supports multiple frequency bands for communication.

Question 17

What frequency bands does the AN/WSC 9 V2 NMT primarily support for IP services?

Answer 17

SHF, KA, & X frequency bands

These frequency bands are primarily utilized for IP services and plain old telephone systems (POTS).

Question 18

What is the primary means for message traffic in SHF communications?

Answer 18

Command and Control official information exchange

This method is essential for secure and reliable communication.

Question 19

What frequency band does the AN/WSC 9 V2 NMT support for EHF communications?

Answer 19

Q band

The Q band is specifically used for EHF communications.

Question 20

What types of services does EHF communications provide?

Answer 20

Secure voice and data, secondary IP services

EHF is crucial for secure communications and offers additional services.

Question 21

What are the data rate capabilities of EHF communications?

Answer 21

LDR, MDR, XDR

• LDR: Low Data Rate for voice
• MDR: Medium Data Rate for data/links
• XDR: Extended Data Rate for data/links and IP.

Question 22

What is the SA-2112v6 RED SAS used for?

Answer 22

Electronically patch CRYPTO to RED phone

This system facilitates secure communication by linking cryptographic systems with voice communication.

Question 23

What is the function of the SA-2112Av3 BLACK SAS?

Answer 23

Electronically patch RADIO to CRYPTO

This system links radio communications with cryptographic systems for secure data transmission.

Question 24

What does DAMA stand for?

Answer 24

Demand Assigned Multiple Access

DAMA allows for efficient allocation of communication resources.

Question 25

How many MD-1324 modems are mentioned, and what is their capacity?

Answer 25

2 MD-1324’s, each with 2 ports for 1 circuit per modem

This setup allows for flexible communication capabilities.

Question 26

What program is used to interface with the MD-1324 modems?

Answer 26

VTC 300

VTC 300 is essential for programming the modems and SATCOM radios.

Question 27

Fill in the blank: The MD-1324’s have a maximum of _______ circuits for each modem.

Answer 27

1 circuit

This limitation is important for understanding the capacity of the system.

Question 28

What is the total number of ports on the 1293 modem?

Answer 28

16 ports

Question 29

What program is used to interface with the 1293 modem?

Answer 29

Hyper terminal

Question 30

What does ADNS stand for in the context of the Automated Digital Network System?

Answer 30

Automated Digital Network System

Question 31

What is the primary function of ADNS?

Answer 31

SHIPS ROUTER!!! How we get off ship

Question 32

What does NIAPS host?

Answer 32

NSIPS Afloat

Question 33

What does NTCSS stand for?

Answer 33

Naval Tactical Command Support System

Question 34

What systems does NTCSS host?

Answer 34

• OMMS
• RADM
• RSUPPLY

Question 35

What type of network is NIPR?

Answer 35

Unsecure network

Question 36

What type of network is SIPR?

Answer 36

Secure network

Question 37

What does SECREL stand for?

Answer 37

Secret Releasable

Question 38

What is the purpose of SECREL?

Answer 38

Used to communicate and share sensitive information between US Forces and our allies

Question 39

List three allies that SECREL is used to communicate with.

Answer 39

• JPN
• KOR
• CMFP