A woman is listening to her radio, which is 176 m from the radio
station transmitter.
(a)
How many wavelengths of the radio waves are there between the
transmitter and radio receiver if the woman is listening to an AM
radio station broadcasting at 1180 kHz?
wavelengths
(b)
How many wavelengths are there between the transmitter and radio
if she changes to an FM station broadcasting at 96.9 MHz?
wavelengths
Draw a block diagram to show the communication process between a
transmitter and a receiver. By referring to the diagram you draw,
explain the role of ELV systems in enhancing the communication
effectiveness and efficiency.
describe and explain what is Transmitter, Receiver, Transciever
and give the example minimum 3 with the explanation for each
transmitter, receiver and transmitter! note please answer write in
application in the Microsoft Word and please in proper grammar
1. (10 pts) A mobile receiver communicates with
the transmitter at an operating frequency of 550 MHz at a distance
of 3 km. Calculate the path loss in the system.
2. (15 pts) Assume that two antennas are
half-wave dipoles and each has a gain of 3 dB. If the transmitted
power is 1 W and the two antennas are separated by a distance of 10
km, what is the received power? Assume that the frequency is 100
MHz.
3....
A radio receiver operating at 477MHz with minimum sensitivity of
-85dBm is connected to an antenna with gain +12dBi using a feeder
cable with loss of -3dB.The transmitter is 40Km away and uses a
parabolic antenna with gain of +23dBi. The transmitter feeds the
antenna through a coaxial cable with -6dB loss. What is the minimum
transmitter power required for reliable operation of the link
assuming a fade margin of 10dB?
A helicopter flying at a distance of 20.0 km from a radio
transmitter receives a signal of intensity 35.1 μW/m2 .
A) Find the magnitude of the electric component of the signal at
the helicopter’s location.
B) Find the magnitude of the magnetic component of the signal at
the helicopter’s location.
C) If the radio transmitter radiates its signal uniformly over a
hemisphere, what is the transmitted power?
A small radio transmitter broadcasts in a 30 mile radius. If you
drive along a straight line from a city 40 miles north of the
transmitter to a second city 35 miles west of the transmitter,
during how much of the drive will you pick up a signal from the
transmitter?