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Flashcards in Communications Deck (37):
1

What does SOI stand for?

Signal Operation Instructions

2

What does the SOI provide?

-The organization of stations into nets -Assigns call signs
-Designates Net Control Stations (NCS) -Assigns frequencies
-Changes to alternate frequencies
-Security Procedures to be used by Radio Operators

3

What Field Manual covers Tactical Single-Channel Radio Communications Techniques?

FM 24-18

4

What percent of slack should you allow when laying WD1 wire?

20 percent

5

Which means of communication is least secure?

Radio

6

What are five methods of communication?

. Radio
2. Sound
3. Visual
4. Messenger 5. Wire

7

Which means of communication is most secure?

Messenger

8

What is COMSEC?

COMmunications SECurity

9

What is OPSEC?

OPerations SECurity

10

List 5 factors that affect the range of radio equipment?

Weather, Terrain, Antenna, Powe,r Location

11

What does NCS stand for?

Net Control Station

12

What does MIJI stand for?

Meaconing, Intrusion, Jamming and Interference

13

What is the range of a TA-1 field phone?

Approximately 3.7 miles using field wire

14

How many volts are in a TA-1 field phone when squeezed?

100 volts

15

What is the maximum effective distance of a TA-312 field phone in wet and dry climates?

-Wet - 14 miles
-Dry -22 miles

16

What does CB, LB, and CBS stand for on a TA-312 field phone?

CB-common battery
LB-local battery
CBS- common battery signaling

17

BA30 batteries should be installed how, in a TA-312 field phone?

1 up 1 down

18

What is WD-1?

Communications field wire

19

What does the "W" and "D" stand for in "WD-1" Wire?

Wire Drum

20

How deep should you dig when laying WD1 wire under hard-packed dirt roads?

6 to 12 inches

21

How deep should you dig WD1 wire in loose or sandy soil?

At least 3 feet

22

How much WD1 wire is on a donut roll (MX306)?

1/2 mile

23

How much WD1 wire is on a DR8 reel?

1/4 mile

24

How far beyond each side of the road should wire be buried?

At least 2 ft

25

WD1 wire must be how high above a road crossing?

At least 18 ft

26

How much tape should you use when taping a splice?

At least 4 inches

27

What device is used to enter FH (Frequency Hop) Data info into the SINCGARS?

A MX-10579 ECCM Fill Device

28

What do the letters AN and PRC stand for?

Army/Navy and Portable Radio Communicator

29

What is an AN/PRC-68?

A type of Squad radio small unit transceiver

30

What is the first thing you do before sending a radio message?

Listen to see if the Net is clear

31

What does SINCGARS stand for?

SINgle Channel Ground/Airborne Radio System

32

How much does the AN/PRC 77 weigh?

About 25 lbs

33

What is the approximate range of the AN/PRC 77?

5 to 8 KM

34

How many channels does the AN/PRC 77 have?

920

35

What type of knot do you use when repairing WD1 wire?

A square knot

36

Most infantry radios are _____ Modulated?

FM

37

What does EPLRS Stand for?

Enhanced Position Location Reporting System