What is the frequency of operation of weather radar?

A)
500 kHz
B)
548 kHz
C)
1000 MHz
D)
9375 MHz

Correct Answer :   9375 MHz

Explanation : The weather radar operates at a frequency of 9375 MHz, corresponding to a wavelength of 3 cm. This small wavelength gets easily reflected from clouds containing high water concentrations.

Recently Updated in Avionics Questions
What is the range of typical weather radar?
A)
5 nmi
B)
50 nmi
C)
200 nmi
D)
500 nmi

Correct Answer : Option (C) :   200 nmi

Explanation : The use of airborne weather radar is one method of storm avoidance. A weather radar system can show centers at a distance of up to 200 nmi.

What is the frequency of operation of weather radar?
A)
500 kHz
B)
548 kHz
C)
1000 MHz
D)
9375 MHz

Correct Answer : Option (D) :   9375 MHz

Explanation : The weather radar operates at a frequency of 9375 MHz, corresponding to a wavelength of 3 cm. This small wavelength gets easily reflected from clouds containing high water concentrations.

What is the gain required by a weather radar antenna?
A)
5 dB
B)
25 dB
C)
50 dB
D)
65 dB

Correct Answer : Option (B) :   25 dB

Explanation : The signal strength of echoes from storms located at a distance from the aircraft is very low, which requires the transmitter to operate at very high power levels and that the antenna have a gain of more than 25 dB.

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