TC 9-64 _________________________________________________________________________
resonant line
A transmission line that has standing waves of current
and voltage.
rest position
See REFERENCE LINE.
reverberation
The multiple reflections of sound waves.
rhombic antenna
frequency transmission and reception.
rigid coaxial line
A coaxial line consisting of a central, insulated wire
(inner conductor) mounted inside a tubular outer
conductor.
scatter angle
The angle at which the receiving antenna must be
aimed to capture the scattered energy of tropospheric
scatter.
self-induction
The phenomenon caused by the expanding and
collapsing fields of an electron which encircles other
electrons and retards the movement of the encircled
electrons.
self-luminous bodies
Objects that produce their own light.
sending end
See INPUT END.
series resonant
circuit
shielded pair
A line consisting of parallel conductors separated from
each other and surrounded by a solid dielectric.
short-circuited line
A transmission line that has a terminating impedance
equal to 0.
sink
See OUTPUT END.
skin effect
Skin effect is a tendency for alternating current to flow
mostly near the outer surface of a solid electrical
conductor, such as metal wire, at frequencies above the
audio range. .
skip distance
The distance from a transmitter to the point where the
sky wave is first returned to earth.
skip zone
A zone of silence between the point where the ground
wave becomes too weak for reception and the point
where the sky wave is first returned to earth.
sky waves
Radio waves reflected back to earth from the
Glossary-12
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