FROL Flashcards
Range of VHF at less than 5000ft
60nm
Range of VHF 5000-10,000ft
90nm
Range of VHF >10,000ft
120nm
MULTICOM Frequency
126.7
Radio Waves between:
3kHz - 300GHz
VOR Range
200nm
VHF band:
118.0 MHz to 135.95 MHz
VOR band:
112.0 to 117.95 MHz
Primary Radar
50nm
What does ATIS stand for?
Automatic Terminal Information Service
List four items of meteorological data which are included in an ATIS broadcast:
Wind, Cloud, QNH, Temperature
LF Range
30kHz - 300kHz
HF Range
3MHz - 30 MHz
VLF Range
3kHz - 30kHz
MF Range
300kHz - 3MHz
VHF Range
30MHz - 300MHz
SHF Range
3GHz - 30GHz
UHF Range
300MHz - 3GHz
EHF Range
30GHz - 300GHz
What can VHF be used for?
VHF short range communication, VOR Nav and ILS
What antenna is generally used due to its higher strength , allowing it to be shorter than the wavelength?
Whip or Rod antenna
What are the four main types of antenna?
Boomerang (V-Type), Rod, Whip and Single Blade
Typical VHF is ~120MHz therefore has a wavelength of approximately ___?
2.5m
How many antennas are required for VOR radio and why do they need this number?
- To compare the strength of the frequencies so as that the VOR can be located.
What does From mean in a VOR?
On the track side of the VOR.
What does To mean in a VOR?
Not on the track side of the VOR.
When may HF quality be reduced and why?
Between Sunrise and Sunset. Due to the ionosphere.
When spoken, is wind magnetic or true?
Magnetic.
On an AWIS transmission, below what height is cloud reported?
12,500ft
On an AWIS transmission, rainfall is expressed as rainfall in the last _____ minutes.
10 minutes.
HF range (distance)
2000nm