Radio Shop - HF Online Exam Quiz
Radio Shop - HF GK Quiz. Question and Answers related to Radio Shop - HF. MCQ (Multiple Choice Questions with answers about Radio Shop - HF
Communication at high frequencies is often called as __
Options
A : Longwave radio
B : Ultra shortwave radio
C : Shortwave radio
D : Mediumwave radio
Frequencies immediately below HF are referred to as ___
Options
A : Medium frequency
B : Ultra high frequency
C : Low frequency
D : Ultra low frequency
HF radio waves can travel beyond the horizon.
Options
A : FALSE
B : TRUE
C : -
D : -
In aviation, HF communication systems are required for all trans-oceanic flights.
Options
A : FALSE
B : TRUE
C : -
D : -
On a day in full summer the __ tend to be more usable.
Options
A : Ultra low frequencies
B : Medium frequencies
C : Lower frequencies
D : Higher frequencies
The High frequency band is also known as ___
Options
A : Pentameter band
B : Decameter band
C : Quadmeter band
D : Hexameter band
The lowest usable frequency depends on the absorption of which of the following layers?
Options
A : D-layer
B : E-layer
C : F-layer
D : G-layer
The MUF is lowest when the waves are directed ___
Options
A : Straight downwards
B : Straight upwards
C : Diagonally
D : Incidentally
What is the frequency range of HF (High frequency)?
Options
A : 3 MHz to 30 MHz
B : 3 Hz to 30 Hz
C : 3 KHz to 30 KHz
D : 3 mHz to 30 mHz
What is the full form of FOT?
Options
A : Frequency of open transmission
B : Frequency of optimum transmission
C : Frequency of optical transmission
D : Frequency of optional transmission
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