1 Answer

Answer :

Tropospheric scatter is used with frequencies in the UHF.

Related questions

Description : Tropospheric scatter is a method of sky wave propagation for which of the following frequency bands? A. 300 kHz to 3 MHz B. 3 MHz to 30 MHz C. 30 MHz to 300 MHz D. 300 MHz to 3 GHz

Last Answer : D. 300 MHz to 3 GHz

Description : Where is the tropospheric region that contributes most strongly to tropospheric scatter propagation?

Last Answer : Near the mid-point between the transmitting and receiving antennas, just above the radio horizon.

Description : Explain Tropospheric scatter propagation with sketch.

Last Answer : As the name implies, troposcatter uses the troposphere as the region that affects the radio signals being transmitted, returning them to Earth so that they can be received by the ... of "blurring" the overall received signal and this makes high speed data transmissions difficult.

Last Answer : Tropospheric mode of propagation is used in VHF.

Description : Troposheric scatter uses the frequencies in the ________ band. A. VLF B. UHF C. VHF D. UF

Last Answer : B. UHF

Last Answer : Frequencies in the UHF range propagate by means of space wave.

Description : (1) the action of ultraviolet rays on oxygen Explanation: The majority of tropospheric ozone formation occurs when nitrogen oxides (NOx), carbon monoxide (CO ) and volatile organic compounds (VOCs), such as xylene, ... violet rays. NOx, CO, and VOCs are called ozone precursors. CO + 2O2 + CO2 + O3

Last Answer : Water is not effective in extinguishing a fire caused by petrol because - (1) the flame is too hot for water to cool it down (2) water and petrol react chemically (3) water and petrol are ... (4) water and petrol are immiscible with each other and petrol which forms the upper layer continues to burn

Description : ____ is a term given to the region where superrefraction occurs. A. Strata B. Duct C. Isothermal region D. Tropospheric region

Last Answer : B. Duct

Description : The decimetric wave is using what method of propagation? A. Ground wave B. Space wave C. Sky wave D. Tropospheric wave

Last Answer : B. Space wave

Description : What propagation condition is usually indicated when a VHF signal is received from a station over 500 miles away? A. D-layer absorption B. Faraday rotation C. Tropospheric ducting D. Moonbounce

Last Answer : C. Tropospheric ducting

Description : What propagation condition is usually indicated when a VHF signal is received from a station over 5000 miles away? A. Moonbounce B. D-layer absorption C. Tropospheric ducting D. Faraday rotation

Last Answer : C. Tropospheric ducting

Description : Which radio frequency bands use the tropospheric scattering principle for propagation of radio waves?

Last Answer : Vhf and above

Description : Tropospheric scatteris usedwith frequenciesinthe followingrange: a. HF b. VHF c. UHF d. VLF

Last Answer : c. UHF

Description : Have scatter volleys in Dragon Ball ever worked?

Last Answer : I don’t recall them ever being effective, but maybe the animators like them as they can repeat a load of frames as filler.

Description : I think it is time to scatter my parents ashes, I would like some ideas please?

Last Answer : We scattered my mother-in-laws ashes in a reservoir which had once been a village… the village she lived in.

Description : How do you use labels on a scatter map in Microsoft Excel?

Last Answer : No idea, but welcome to Fluther. =]

Description : Assertion Colloidal sols scatter light while true solutions do not. Reason The particles in the colloidal sol move slower than that of the true solutions. -Chemistry

Last Answer : Both assertion and reason are true but the reason is not the correct explanation of assertion. The size of colloidal particles is large enough to scatter light while particles of a true solution are too small to scatter light.

Description : Why can't you use a scatter plot that has no correlation to make a prediction?

Last Answer : Need answer

Description : How can you use a scatter plot to find an equation of a trend line?

Last Answer : By finding the line of best fit and using the straight lineequation formula.

Description : What does it means to have a correlation in a scatter plot?

Last Answer : A correlation exists in a scatter plot if there is a generaltrend in the outputs as inputs increase. If the outputs generallyincrease in value, then there is a positive correlation. If theoutputs generally decrease in value, then there is a negativecorrelation.

Description : How can make a scatter plot from a set of bivariate data?

Last Answer : What is the answer ?

Description : When the points on a graph tend to scatter randomly we say they indicate?

Last Answer : What is the answer ?

Description : Less dew is formed on cloudy nights because (a) Clouds absorb the falling dew (b) Clouds scatter moisture (c) In cloudy nights the radiation takes place very slowly (d) In cloudy nights the radiation takes place very quickly

Last Answer : Ans:(d)

Description : Sun appears red in colour at sun-rise and sunset due to – (1) the fact that sun emits only red colour at that time (2) red light having longer wave length scatters away (3) that sun Comes out of the mountains (4) that all other colours scatter away except red

Last Answer : (4) that all other colours scatter away except red Explanation: According to Rayleigh's law, the intensity of scattered light varies inversely as the fourth power of its wavelength. Sunlight consists of ... have to travel a larger part of the atmosphere because they are very close to the horizon.

Description : The rhombic antenna is primarily used for A. ground wave propagation B. space wave propagation C. ionosphere scatter propagation D. sky wave propagation

Last Answer : D. sky wave propagation

Description : This type of transmission permits communication in the frequency range from 30 to 60 MHz and over distances from about 1000 to 2000 km. A. Troposcatter B. Ionospheric scatter C. Ducting D. Microwave

Last Answer : B. Ionospheric scatter

Description : Type of transmission path that permits communication in the frequency range from 30 to 60 MHz and over distances form about 1000 to 2000 km. A. Ducting B. Ionospheric scatter C. Microwave D. Troposcatter

Last Answer : B. Ionospheric scatter

Description : which of the following statements is not true for scattering of light? (a) Colour of the scattered tight depends on the size of particles of the atmosphere. (b) Red light is least scattered in the ... air scatter the blue, light more strongly than red. So the scattered blue light enters our eyes.

Last Answer : (c) Scattering of light Lakes place as various colours of white light travel with different speed in fir.

Description : A liquid is found to scatter a beam of light but leaves no residue when passed through the filter paper. What can the liquid be described as ?

Last Answer : Ans. Colloid. 

Description : what are the various pattern of scatter diagram?

Last Answer : Positive correlation Negative correlation No correlation Curvilinear relationship

Description : What is scatter diagram? and its purpose?

Last Answer : Scatter diagram is one of the Quality tool. It is used to find out the correlation between to variables in the process.

Description : A firecracker is placed in the middle of a cluster of stationary billiard balls. The firecracker-billiard ball system sits on a frictionless surface. As the firecracker explodes, the balls scatter. What is the momentum ... to the combined speed of the balls y) equal to the mass of the balls z) zero

Last Answer : ANSWER: Z -- ZERO

Description : Which one of the following methods serve to measure correlation between two variables? (A) Scatter Diagram (B) Frequency Distribution (C) Two-way table (D) Coefficient of Rank Correlation

Last Answer : (D) Coefficient of Rank Correlation 

Description : Sun appears red in colour at sunrise and sunset due to (1) the fact that sun emits only red colour at that time (2) red light having longer wave length scatters away (3) that sun comes out of the mountains (4) that all other colours scatter away except red

Last Answer :  that all other colours scatter away except red

Description : State the need of signal conditioning and signal processing .List applications of instrumentation amplifier.

Last Answer : * In an instrumentation system, a transducer is used for sensing various parameters. The output of transducer is an electrical signal proportional to the physical quantity sensed such as pressure, ... monitoring and control 5) Light intensity meter 6) Measurement of flow and thermal conductivity

Description : Which of the following statement is false? Modulation is used to: (1) Reduce the bandwidth used (2) Separate differing transmissions (3) Ensure that intelligence may be transmitted over long distances (4) Allow the use of practicable antennas

Last Answer : Which of the following statement is false? Modulation is used to: Reduce the bandwidth used

Description : Indicate which one of the following is NOT an advantage of FM over AM? (1) Better noise immunity is provided (2) Lower bandwidth is required (3) The transmitted power is more useful (4) Less modulating power is required 

Last Answer : Indicate which one of the following is NOT an advantage of FM over AM? (1) Better noise immunity is provided (2) Lower bandwidth is required (3) The transmitted power is more useful (4) Less modulating power is required 

Description : Theoretical bandwidth requirement for FM system is: (1) Same as that of the modulating signal bandwidth (2) Twice of modulating signal Bandwidth (3) Thrice as of modulating signal Bandwidth (4) Infinite 

Last Answer : Theoretical bandwidth requirement for FM system is: Infinite

Description : The Ku frequency band used in satellite communication (for uplink and downlink) is: (1) 14 GHz and 11 GHz (2) 30 GHz and 20 GHz (3) 70 GHz and 50 GHz (4) 60 GHz and 45 GHz 

Last Answer : The Ku frequency band used in satellite communication (for uplink and downlink) is: 14 GHz and 11 GHz 

Description : The disadvantage of CDMA system is: (1) Higher MAI with more user count. (2) That it needs least power consumption. (3) That it needs coherent signal. (4) That it is not suitable with PSK systems 

Last Answer : The disadvantage of CDMA system is: Higher MAI with more user count. 

Description : Which of the following is an inherent property of an optical signal and cannot be eliminated even in principle? (1) Thermal noise (2) Shot noise (3) Environmental noise (4) Background Noise

Last Answer : Which of the following is an inherent property of an optical signal and cannot be eliminated even in principle? (1) Thermal noise (2) Shot noise (3) Environmental noise (4) Background Noise

Description : The use of non-uniform quantization leads to: (1) Reduction in transmission bandwidth. (2) Increase in maximum SNR. (3) Increase in SNR for signal levels. (4) Simplification of quantization process. 

Last Answer : The use of non-uniform quantization leads to:  Increase in SNR for signal levels.

Description : In amplitude modulation AM, if modulation index is more than 100% then: (1) Power of the wave increases. (2) Efficiency of transmission increases. (3) The wave gets distorted. (4) Bandwidth increases

Last Answer : In amplitude modulation AM, if modulation index is more than 100% then: The wave gets distorted.

Description : In the case of a 70–MHz IF carrier for a transponder bandwidth of 36 MHz, energy must lie between MHz: (1) 34 and 106 (2) 52 and 88 (3) 106 and 142 (4) 34 and 142

Last Answer : In the case of a 70–MHz IF carrier for a transponder bandwidth of 36 MHz, energy must lie between MHz: 52 and 88

Description : In T1 digital system, the frame synchronization code repeats every

Last Answer : In T1 digital system, the frame synchronization code repeats every 125 microsecond

Description : In a PCM system the number of quantization level are 16 and the maximum signal frequency is 4 KHz the transmission bit rate is

Last Answer : In a PCM system the number of quantization level are 16 and the maximum signal frequency is 4 KHz the transmission bit rate is 32 Kbits/sec

Description : Principle of Doppler effect is used in

Last Answer : Principle of Doppler effect is used in MTI radar and CW Doppler radar

Description : The capacity of a standard 4 KHz telephone channel with a 32 dB SNR is

Last Answer : The capacity of a standard 4 KHz telephone channel with a 32 dB SNR is 32953 bits/second

Description : A radio transmitter is an equipment:

Last Answer : A radio transmitter is an equipment:  for generating modulated radio frequency waves