B-007-03: Propagation hops, skip zone, skip distance
B-007-03-01:
What is a skip zone?
An area which is too far away for ground-wave propagation, but too close for sky-wave propagation
An area which is too far away for ground-wave or sky-wave propagation
An area covered by sky-wave propagation
An area covered by ground-wave propagation
B-007-03-02:
What is the maximum distance along the earth's surface that is normally covered in one hop using the F2 region?
4500 km (2500 miles)
None; the F2 region does not support radio-wave propagation
2160 km (1200 miles)
325 km (180 miles)
B-007-03-03:
What is the maximum distance along the earth's surface that is normally covered in one hop using the E region?
2160 km (1200 miles)
325 km (180 miles)
4500 km (2500 miles)
None; the E region does not support radio-wave propagation
B-007-03-04:
Skip zone is:
a zone between the end of the ground wave and the point where the first refracted wave returns to earth
a zone of silence caused by lost sky waves
a zone between any two refracted waves
a zone between the antenna and the return of the first refracted wave
B-007-03-05:
The distance to Europe from your location is approximately 5000 km. What sort of propagation is the most likely to be involved?
multihop
sporadic "E"
back scatter
tropospheric scatter
B-007-03-06:
For radio signals, the skip distance is determined by the:
height of the ionosphere and the angle of radiation
power fed to the final
angle of radiation
type of transmitting antenna used
B-007-03-07:
The distance from the transmitter to the nearest point where the sky wave returns to the earth is called the:
skip distance
skip zone
angle of radiation
maximum usable frequency
B-007-03-08:
Skip distance is the:
the minimum distance reached by a signal after one reflection by the ionosphere
the maximum distance reached by a signal after one reflection by the ionosphere
the minimum distance reached by a ground-wave signal
the maximum distance a signal will travel by both a ground wave and reflected wave
B-007-03-09:
Skip distance is a term associated with signals from the ionosphere. Skip effects are due to:
reflection and refraction from the ionosphere
selective fading of local signals
high gain antennas being used
local cloud cover
B-007-03-10:
The skip distance of a sky wave will be greatest when the:
angle between ground and radiation is smallest
polarization is vertical
ionosphere is most densely ionized
signal given out is strongest
B-007-03-11:
If the height of the reflecting layer of the ionosphere increases, the skip distance of a high frequency (HF) transmission:
becomes greater
stays the same
varies regularly
decreases
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