8-A-04: Power, Pulse Width, PRR
8-4A1:
A pulse RADAR has a pulse repetition frequency (PRF) of 400 Hz, a pulse width of 1 microsecond, and a peak power of 100 kilowatts. The average power of the RADAR transmitter is:
40 watts.
25 watts.
250 watts.
400 watts.
8-4A2:
A shipboard RADAR transmitter has a pulse repetition frequency (PRF) of 1,000 Hz, a pulse width of 0.5 microseconds, peak power of 150 KW, and a minimum range of 75 meters. Its duty cycle is:
0.0005
0.5
0.05
0.005
8-4A3:
A pulse RADAR transmits a 0.5 microsecond RF pulse with a peak power of 100 kilowatts every 1600 microseconds. This RADAR has:
An average power of 31.25 watts.
A PRF of 3,200.
A maximum range of 480 kilometers.
A duty cycle of 3.125 percent.
8-4A4:
If a RADAR transmitter has a pulse repetition frequency (PRF) of 900 Hz, a pulse width of 0.5 microseconds and a peak power of 15 kilowatts, what is its average power output?
6.75 watts.
15 kilowatts.
13.5 watts.
166.67 watts.
8-4A5:
What is the average power if the RADAR set has a PRF of 1000 Hz, a pulse width of 1 microsecond, and a peak power rating of 100 kilowatts?
100 watts.
10 watts.
1,000 watts.
None of these.
8-4A6:
A search RADAR has a pulse width of 1.0 microsecond, a pulse repetition frequency (PRF) of 900 Hz, and an average power of 18 watts. The unit’s peak power is:
20 kilowatts.
200 kilowatts.
180 kilowatts.
2 kilowatts.
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● = Learned
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● = Incorrect answer
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