Cisp

Question 1

What are the 2 types of electromagnetic waves?

Answer 1

• transverse
• longitudinal

Question 2

What is the standard distance for short range radio communications?

Answer 2

Approx. 50 NM

Question 3

What is the definition of military comms?

Answer 3

The rapid transfer of information between military units and the authorities that control them.

Question 4

What are the 3 elements of a basic communications system?

Answer 4

• sender
• medium/bearer
• receiver

Question 5

Give 3 methods of communications?

Answer 5

• visual
• radio
• line

Question 6

What is the definition of a radio comms system?

Answer 6

A radio communications system uses the medium of radio waves to transmit and receive information.

Question 7

What is the standard distance for long range radio comms?

Answer 7

Worldwide coverage

Question 8

Define Tactical Communications

Answer 8

Tactical communications between 2 or more mobile units, typically carried out at short range conveying operationally important information.

Question 9

Define strategic comms

Answer 9

Long range communications with units and authorities which require the use of shore stations and convey administrative and operational information.

Question 10

Define a radio communications system

Answer 10

A radio communications system uses the medium of radio waves to transmit and receive information.

Question 11

What is the main RN application for SHF?

Answer 11

Radar and satellite communications.

Question 12

What is the main RN application for ELF?

Answer 12

Not used

Question 13

What is the main RN application for VLF?

Answer 13

Shore to submarine, strategic

Question 14

What is the main RN application for LF?

Answer 14

Shore to ship and sub, strategic

Question 15

What is the main RN application for MF and HF?

Answer 15

Medium and long range, tactical and strategic

Question 16

What is the main RN application for VHF and UHF?

Answer 16

Short range tactical and long range strategic.

Question 17

What is the main RN application for SHF?

Answer 17

Long range strategic

Question 18

What is the main RN application for EHF?

Answer 18

Not used

Question 19

Define propagation

Answer 19

The way in which radio waves travel through the earths atmosphere or space.

Question 20

What range of frequencies are suitable for ground wave propagation?

Answer 20

HF and Below

Question 21

Name the 3 method of radio wave propagation?

Answer 21

• Ground
• Sky
• Space/Direct

Question 22

What is the area in the atmosphere known as that refracts a sky wave?

Answer 22

Ionosphere

Question 23

Define the term “emission designator”

Answer 23

Internationally recognised shorthand that accurately describes the construction of an emission.

Question 24

What does the 1st character of an emission designator indicate?

Answer 24

Type of modulation

Question 25

What does letter “A” indicate when it appears as the 1st character of an emission designator?

Answer 25

Amplitude modulation, double side band

Question 26

What does “2” indicate when they appear as the 2nd character of an emission designator?

Answer 26

Single channel digital

Question 27

What does “3” indicate when they appear as the 2nd character of an emission designator?

Answer 27

Single channel analogue

Question 28

What does “7” indicate when they appear as the 2nd character of an emission designator?

Answer 28

Multi-channel digital

Question 29

What does “B” indicate when they appear as the 3rd character of an emission designator?

Answer 29

RATT (telegraphy)

Question 30

What does “E” indicate when they appear as the 3rd character of an emission designator?

Answer 30

Voice (telegraphy)

Question 31

What does “D” indicate when they appear as the 3rd character of an emission designator?

Answer 31

Digital data

Question 32

What does “D” indicate when they appear as the 3rd character of an emission designator?

Answer 32

Digital data

Question 33

Breakdown the acronym “RATT”

Answer 33

Radio automatic teletype

Question 34

Define the RATT Parameter shift

Answer 34

The difference in frequency between the 2 RATT tones measured in hertz.

Question 35

Why do we offset?

Answer 35

To centre our emission around the frequency assigned.

Question 36

Define the term “frequency assigned”

Answer 36

The frequency assigned is defined as being the centre of the allocated bandwidth to be used.

Question 37

What is the standard offset for SSB (SC) voice emissions?

Answer 37

1.5KHZ or 1.4KHZ if frequency ends in .4

Question 38

State the formula for calculating the offset for a SSB (SC) RATT emission?

Answer 38

(A+Z) divided by 2

Question 39

What does FSC stand for?

Answer 39

Frequency surpressed carrier.

Question 40

What does FA stand for?

Answer 40

Frequency assigned

Question 41

What does USB stand for?

Answer 41

Upper sideband

Question 42

What does LSB stand for?

Answer 42

Lower sideband

Question 43

Define “Frequency assigned”

Answer 43

Being at the centre of the allocated bandwidth to be used.

Question 44

Define “Emission designator”

Answer 44

An internationally recognised shorthand that accurately describes the construction of an emission.

Question 45

Define military communications

Answer 45

The rapid transfer of information between military units and the authorities that control them

Question 46

Define radio communications system

Answer 46

A radio communications system uses the medium of radio waves to transmit and receive information

Question 47

Define tactical communications

Answer 47

Tactical communications between 2 or more mobile units, typically carried out at short range, conveying operationally important information.

Question 48

Define strategic communications

Answer 48

Communications with units and authorities which require the use of shore stations and convey administrative and operational information. Strategic communications are typically long-range and involve world-wide coverage.

Question 49

What layers are in the ionosphere during the day?

Answer 49

D, E, F1, F2

Question 50

What layers are in the ionosphere during the night?

Answer 50

E and D layers disappear and the F layers combine.