7.3 Hops and Skips

Practice

B-007-03-01
What is a skip zone?

An area which is too far away for ground-wave or sky-wave propagation

An area covered by sky-wave propagation

An area which is too far away for ground-wave propagation, but too close for 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?

None; the F2 region does not support radio-wave propagation

2160 km (1200 miles)

4500km (2500 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 of silence caused by lost sky waves

a zone between any two refracted waves

a zone between the end of the ground wave and the point where the first refracted wave returns to earth

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?

sporadic "E"

back scatter

multihop

tropospheric scatter

B-007-03-06
For radio signals, the skip distance is determined by the:

power fed to the final

angle of radiation

type of transmitting antenna used

height of the ionosphere and the angle of radiation

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 zone

angle of radiation

skip distance

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:

polarization is vertical

ionosphere is most densely ionized

angle between ground and radiation is smallest

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:

stays the same

varies regularly

becomes greater

decreases