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Communications
Radio wave that is far from its sources is called
Communications
What is the lowest layer of the ionosphere?
Communications
When the electric field is perpendicular in the surface of the earth, what is the polarization of the TEM wave?
Communications
An electromagnetic wave consists of ___________.
Communications
________ is the amount of voltage induced in wave by an electromagnetic wave.
Communications
What layer of the atmosphere is used for high-frequency day time propagation?
Communications
In tropospheric scatter propagation, the attenuation is dependent on
Communications
What is the highest layer of the atmosphere?
Communications
What is the separation in degrees of the electric and magnetic fields in an electromagnetic wave?
Communications
Light goes from medium A to medium B at angle of incidence of 40 degrees. The angle of refraction is 30 degrees. The speed of light in B
Communications
Frequencies in the UHF range propagate by means of
Communications
What is the major advantage of telegraphy over other early types of communications?
Communications
Medium frequency range is from
Communications
What is the effective radiated power of a repeater with 200W transmitter power output, 4dB feed line loss, 4dB duplexer and circulator loss, and 10dB feed line antenna gain?
Communications
A mobile receiver experiences “dead” areas of reception as a result of
Communications
It is the ratio effective Earth radius to true earth radius
Communications
Refers to the direction of the electric field vector in space
Communications
What is the unit of electric field strength?
Communications
Most of the effects an electro magnetic wave produces when it interacts with matter are due to its
Communications
When the magnetic field is perpendicular to the surface of the earth, what is the polarization of the TEM wave?
