Microwave Communication In microwave transmission using digital radio, what causes most intersymbol interference? Rayleigh fading Delayed spreading Random Doppler shift Slow fading Rayleigh fading Delayed spreading Random Doppler shift Slow fading ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The antenna separations (in meters) required for optimum operation of a space diversity system can be calculated from:where R = effective earth radius (m) and L = path length (m) S = λR/RL S = 3λR/L S = 2λR/L S = λR/L S = λR/RL S = 3λR/L S = 2λR/L S = λR/L ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Which causes multipath or frequency selective fading? Nearer reflector Small reflector Further reflector Large reflector Nearer reflector Small reflector Further reflector Large reflector ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Theoretically electromagnetic radiation field strength varies in inverse proportion to the square of the distance, but when atmospheric attenuation effects and the absorption of the terrain are taken into account the attenuation can be as high as the inverse ___________ power of the distance. Sixth Third Fifth Fourth Sixth Third Fifth Fourth ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication A thin layer of dirt and grime coverts the reflecting surface of the parabolic dish of a radar set. The particular effect on the performance of the radar will be A decrease in gain A decrease in range No noticeable effect A reduction in horizontal resolution A decrease in gain A decrease in range No noticeable effect A reduction in horizontal resolution ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication When used in conjunction with a radar set, the purpose of an echo box is to provide an artificial target. To the tone of the pulse repetition Which may be used to tune the radar synchronizer Tune the magnetron to the correct frequency Which may be used to tune the radar receiver To the tone of the pulse repetition Which may be used to tune the radar synchronizer Tune the magnetron to the correct frequency Which may be used to tune the radar receiver ANSWER DOWNLOAD EXAMIANS APP
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