B-007-01: Line of sight, ground wave, ionospheric wave (sky wave)
B-007-01-01:
What type of propagation usually occurs from one hand-held VHF transceiver to another nearby?
Line-of-sight propagation
Tunnel propagation
Sky-wave propagation
Auroral propagation
B-007-01-02:
How does the range of sky-wave propagation compare to ground-wave propagation?
It is much longer
It is much shorter
It is about the same
It depends on the weather
B-007-01-03:
When a signal is returned to earth by the ionosphere, what is this called?
Sky-wave propagation
Tropospheric propagation
Ground-wave propagation
Earth-moon-earth propagation
B-007-01-04:
How are VHF signals propagated within the range of the visible horizon?
By direct wave
By sky wave
By plane wave
By geometric wave
B-007-01-05:
Skywave is another name for:
ionospheric wave
tropospheric wave
ground wave
inverted wave
B-007-01-06:
That portion of the radiation which is directly affected by the surface of the earth is called:
ground wave
tropospheric wave
ionospheric wave
inverted wave
B-007-01-07:
At HF frequencies, line-of-sight transmission between two stations uses mainly the:
ground wave
troposphere
skip wave
ionosphere
B-007-01-08:
The distance travelled by ground waves:
is less at higher frequencies
depends on the maximum usable frequency
is more at higher frequencies
is the same for all frequencies
B-007-01-09:
The radio wave which follows a path from the transmitter to the ionosphere and back to earth is known correctly as the:
ionospheric wave
F layer
surface wave
skip wave
B-007-01-10:
Reception of high frequency (HF) radio waves beyond 4000 km is generally possible by:
ionospheric wave
ground wave
skip wave
surface wave
|
Color key:
|
|
● = Unseen
|
|
● = Weak
|
|
● = Review
|
|
● = Learned
|
|
● = Incorrect answer
|
