Microwave Communication __________ is the progressive decrease of signal strength with increasing distance. Attenuation Radiation Modulation Propagation Attenuation Radiation Modulation Propagation 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/RL S = λR/L S = 2λR/L S = 3λR/L S = λR/RL S = λR/L S = 2λR/L ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication A shipboard equipment which measures the distance between the ship’s bottom and the ocean floor. SONAR Echosounder Fathometer LORAN SONAR Echosounder Fathometer LORAN ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication In a pulsed radar set, the function of the duplexer is to Prevent frequency drift in the klystron All of these Aid in calibrating the display unit Allow the transmitter and the receiver to operate from a common antenna Prevent frequency drift in the klystron All of these Aid in calibrating the display unit Allow the transmitter and the receiver to operate from a common antenna ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication In a pulsed radar set, the STC circuit is used to Vary the pulse frequency in order to control the maximum target Increases receiver sensitivity for echoes from targets Reduce interference from the effects of sea return Improve the target bearing resolution Vary the pulse frequency in order to control the maximum target Increases receiver sensitivity for echoes from targets Reduce interference from the effects of sea return Improve the target bearing resolution 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 for receiver alignment Is used to check the percentage of modulation Indicates both the range and azimuth of a target Indicates only the range of a target Is used for receiver alignment Is used to check the percentage of modulation Indicates both the range and azimuth of a target ANSWER DOWNLOAD EXAMIANS APP