Book 1 Flashcards
1
Q
VLF Frequency Range
A
3khz - 30khz
2
Q
LF Freqencie Range
A
30khz - 300khz
3
Q
MF Frequency Range
A
300khz - 3Mhz
4
Q
HF Frequency Range
A
3Mhz - 30Mhz
5
Q
VHF Frequency Range
A
30Mhz - 300Mhz
6
Q
UHF Frequency Range
A
300Mhz - 3Ghz
7
Q
SHF Frequency Range
A
3Ghz - 30Ghz
8
Q
EHF Frequency Range
A
30Ghz - 300Ghz
9
Q
What Frequencies Bands are Ground Waves
A
VLF, LF, MF
10
Q
What are the Attentuation Factors
A
- Depends on the frequency
- Conductivity of the earth
- Premativity of the earth
11
Q
What Frequency band is a Sky Wave
A
HF
12
Q
What are the factors effecting Sky Waves?
A
- Condition of the ionosphere
- The frequency of transmission
- Transmission power
13
Q
What is a Critical Frequency?
A
The highest frequency a Sky Wave can travel vertically before returning to earth
14
Q
What is Skip Distance?
A
The closest point of return for a given frequency
15
Q
What is Dead Space?
A
The area between the furthest point travelled vertically by the ground way and the first point of return of the Sky Wave
