Propagation hops, skip zone, skip distance
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Canadian Basic Exam Question Bank

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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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B-007-04: Ionospheric absorption, causes and variation, fading, phase shift, Faraday rotation
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