Microwave Communication In an SHF pulsed radar set, a reflex klystron can be used as a Duplexer stage Local oscillator Single mixer stage Transmitter oscillator Duplexer stage Local oscillator Single mixer stage Transmitter oscillator ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Which of the following operating frequencies is used for the modern loran navigational system? Loran B: 900 kHz Loran C: 100 kHz Loran D: 10.2 kHz Loran A: 1950 kHz Loran B: 900 kHz Loran C: 100 kHz Loran D: 10.2 kHz Loran A: 1950 kHz ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication If the instantaneous RF potentials on the two sides of a magnetron cavity are of opposite polarity, the operation is in the π/4 mode π mode π/2 mode 2π mode π/4 mode π mode π/2 mode 2π mode ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Calculate the effective earth’s radius if the surface refractivity is 301. 6370 km 8493 km 8493 mmi 6370 mi 6370 km 8493 km 8493 mmi 6370 mi ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication To achieve good bearing resolution when using a pulsed-radar set, an important requirement is A low repetition rate A high duty cycle A narrow, antenna-beam width in the vertical plane A narrow, antenna-beam width in the horizontal plane A low repetition rate A high duty cycle A narrow, antenna-beam width in the vertical plane A narrow, antenna-beam width in the horizontal plane ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication A traveling-wave tube (TWT) amplifies by virtue of The effect of an external magnetic field The energy liberated form the collector The energy contained the cavity resonators The absorption of energy by the signal from an electron stream The effect of an external magnetic field The energy liberated form the collector The energy contained the cavity resonators The absorption of energy by the signal from an electron stream ANSWER DOWNLOAD EXAMIANS APP
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