Radios

Question 1

What does the acronym VULOS stand for

Answer 1

VHF, UHF, Line of Sight

Question 2

What is the frequency of HF?

Answer 2

2 to 29.999 MHz which is a long haul freq max range 40 km

Question 3

What is the Very High Frequency Low band (VHF Low)?

Answer 3

30 to 89.999 MHz

Question 4

What is the Very High Frequency high band (VHF High)?

Answer 4

90 to 224.999

Question 5

What is the Ultra High Frequency LOS/SATCOM (UHF)

Answer 5

225 to 511.999 MHz

Question 6

What are sky waves?

Answer 6

Radio waves that travel up up into the atmosphere.

Question 7

What is the problem with sky waves?

Answer 7

Sky waves are restricted to frequencies from approximately 2 to 12 MHz and produce “skip zones”.

Question 8

What are several factors that can affect distance/range ground waves?

Answer 8

Dense vegetation, mountainous terrain, dry desert soul
Man manse features i.e. bldgs, power lines or water towers
Severe weather, i.e. sandstorms, t-storms, blizzards.

Question 9

What’s does the acronym SINCGARS stand for?

Answer 9

Single Channel Ground Air Radio System

Question 10

What is frequency hopping?

Answer 10

A transmission technique that changes the frequency of a radio chnl automatically at a pseudo random rate common to both to the transmitter & receiver.

Question 11

The 5 variable for freq hopping are?

Answer 11

Net ID
Time
Transmission encryption key (TEK Fill) 
Transmission security key (TSK)
Hopset

Question 12

What are the 4 areas of comsec?

Answer 12

Crypto
Emission
Physical
Transmission

Question 13

What is essential elements of friendly information ( EEFI) ?

Answer 13

Specific items of info that could have a negative impact on friendly operations. i.e. position, capabilities, operations, personnel, comsec,

Question 14

What are preventive measures to avoid enemy exploitation of electronic warfare?

Answer 14

• Reduce electronic traffic to a minimum
• Brevity codes
• alternate means of comm messenger, wire, visual.

Question 15

Fire support nets use what frequency?

Answer 15

VHF

Question 16

Air support nets use what frequency?

Answer 16

UHF/VHF

Question 17

Freq range AN/PRC119 is?

Answer 17

VHF 30-87.975 MHz

Question 18

What are the transmission ranges for the PRC119?

Answer 18

200-400m low power
400-5km med power
5km-10km high power
10km-40km power amplified

Question 19

Is the PRC119 Capable of SINCGARS?

Answer 19

Yes it is and freq hopping at 2230

Question 20

What’s the power output of the PRC 152 on high?

Answer 20

5 watts

Question 21

What antenna is used on PRC152 when using 30-108 MHz?

Answer 21

Blade VHF antenna 30-108 mhz

Question 22

Which antenna will be used on high for the PRC152?

Answer 22

Whip antenna VHF/UHF 30-512 MHz

Question 23

Where do we get the time from when we freq hop?

Answer 23

PSN13 (dagger)

Question 24

What mode is the blade antenna uses for?

Answer 24

FM

Question 24

What mode is the whip antenna uses for?

Answer 24

AM

Question 25

What is the code word to utilize crypto?

Answer 25

VINSON

Question 26

What is the code word to utilize plain text?

Answer 26

COI

Question 28

What is the most secure method of comm?

Answer 28

Messenger

Question 29

What is the frequency range for the PRC152?

Answer 29

VHF, UHF, UHF SATCOM 30 to 511.999 MHz

Question 30

What is the transmission range for the PRC152?

Answer 30

VHS 0-5 miles
UHF LOS - LOS dependent
UHF SATCOM 22,300 miles

Question 31

What is the most secure method of comm?

Answer 31

Messenger

Question 32

What is the frequency range for the PRC152?

Answer 32

VHF, UHF, UHF SATCOM 30 to 511.999 MHz

Question 33

What is the transmission range for the PRC152?

Answer 33

VHF 0-5 miles
UHF LOS - LOS dependent
UHF SATCOM 22,300 miles

Question 34

What does the acronym CEOI stand for?

Answer 34

Communication Equipment Operators Instructions