COMMS

Question 1

What is VHF and what are the parameters?

Answer 1

Very high frequency

• 30-300 MHz (Megahertz)

Question 2

Where is VHF Found/Used?

Answer 2

• GRC-211x2.
• VRC -46x2.
• JHS-32(URC-139)

Question 3

What is GRC-211x2 (VHF) used for?

Answer 3

IAD: Initial Air Distress
MAD: Military Air Distress

Question 4

VRC-46x2 is used for what?

Answer 4

Small boat ops, NSFS

Question 5

Where do we use JHS-32 (URC-139)?

Answer 5

Bridge to Bridge
•1 Master (Bridge)
•1 Slave (Slave)

Question 6

What is DAMA?

Answer 6

Demand Assigned Multiple Access

Question 7

Pertaining to DAMA how many ports does TD-1271x2 have?

Answer 7

TD-1271x2 has 4 ports

Question 8

MD-1324x2 has ________ as a part of DAMA

Answer 8

2- ports

Question 9

225MHz-3GHz is recognized as what?

Answer 9

UHF (Ultra High Frequency)

Question 10

SA-2112 has two main components what are they?

Answer 10

• V6: Red Sas “Coke Machine” connects End User to Crypto/SB

* V3: Bas “Black Sas” connects Crypto /SB to Radio

Question 11

What are the 3 End Users?

Answer 11

• TA-970-Red Phone
• TA-990-Enclosed Red Phone with Weatherproofing
• ON-740- CIC Console

Question 12

_______ are the Primary means of receiving and sending message traffic.

Answer 12

NAVMACS

Question 13

1._______ MAKES ALL LINKS WORK it’s also known as 2._______.

Answer 13

1. JTIDS

2. URC-107

Question 14

3-30GHz is known as ________, it is used as for our primary phone lines and Helo ops, to name a few.

Answer 14

SHF(Super High Frequency)

Question 15

What is SHF used for?

Answer 15

WSC-6V9: Primary IP Services/Phone lines

SRQ-4: Helo Ops, Hawklink

Question 16

Our Primary IP Services / Phone lines are a part of what? (SHF is the frequency but what is the name of the sub system)

Answer 16

WSC-6V9

Question 17

SRQ-4 is used for what?

Answer 17

Helo Ops, Hawklink

Question 18

What is 2-30MHz considered?

Answer 18

HF-High Frequency

Question 19

What sub systems are a part of HF ?

Answer 19

• Transmitter: URT-23D x9
• Receiver: R-2368 x15
• Voice and Data (Link)

Question 20

Transmitter URT-23D has SRA COUPLERS what are they?

Answer 20

• SRA-56 there are 8, 2-6Hz
• SRA-57 there are 4, 4-12Hz
• SRA-58 there are 4, 10-30Hz

Question 21

What is the Emergency Coupler?

Answer 21

URA-38

Question 22

UHF is Ultra High Frequency what is it rated at?

Answer 22

225MHz-3GHz

Question 23

WSC-3V7 and WSC-3V11 are UHF apart of what subsystem?

Answer 23

Line Of Sight

Question 24

SATCOM is a sub system to what frequency? What are the two lines that are considered SATCOM?

Answer 24

• UHF
• WSC-3v15 x5
• WSC-3a

Question 25

HaveQuick is at what frequency allowing for frequency hopping/Anti-Jam?

Answer 25

225MHZ-3GHZ UHF

Question 26

At what frequency is it considered to be Extremely High Frequency?

Answer 26

30-300GHz

Question 27

WSC-9 also known as Navy Multiband Terminal(NMT), covers all 7 Subcategories what are they?

Answer 27

• EHF
• SHF
• Q BAND
• Ka BAND
• Secondary IP Services/Phone lines
• point to point calls ( phone terminals)
• Nets