Microwave Communication Which of the following is used as an oscillator device in the SHF band? Both B and C Tunnel diode Klystron tube Thyratron tube Both B and C Tunnel diode Klystron tube Thyratron tube ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication In a pulsed radar set, the STC circuit is used to Increases receiver sensitivity for echoes from targets Vary the pulse frequency in order to control the maximum target Improve the target bearing resolution Reduce interference from the effects of sea return Increases receiver sensitivity for echoes from targets Vary the pulse frequency in order to control the maximum target Improve the target bearing resolution Reduce interference from the effects of sea return 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 = 3λR/L S = λR/L S = 2λR/L S = λR/RL S = 3λR/L S = λR/L S = 2λR/L S = λR/RL ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication A shipboard equipment which measures the distance between the ship’s bottom and the ocean floor. LORAN Fathometer SONAR Echosounder LORAN Fathometer SONAR Echosounder ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication A PPI cathode-ray tube as used on a radar set Indicates only the range of a target Is used to check the percentage of modulation Indicates both the range and azimuth of a target Is used for receiver alignment Indicates only the range of a target Is used to check the percentage of modulation Indicates both the range and azimuth of a target Is used for receiver alignment ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Which of the reception problems below that is not due to multipath? Rayleigh fading Delayed spreading Random Doppler shift Slow fading Rayleigh fading Delayed spreading Random Doppler shift Slow fading ANSWER DOWNLOAD EXAMIANS APP
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