8-C-22: Amplifiers
8-22C1:
Overcoupling in a RADAR receiver will cause?
Oscillations.
Improved target returns.
Increase the range of the IAGC.
Decrease noise.
8-22C2:
The usual intermediate frequency of a shipboard RADAR unit is:
30 or 60 MHz.
455 kHz.
10.7 MHz.
120 MHz.
8-22C3:
The I.F. Amplifier bandwidth is:
Wide for short ranges and narrow for long ranges.
Wide for long ranges and narrow for short ranges.
Constant for all ranges.
Adjustable from the control panel.
8-22C4:
A logarithmic IF amplifier is preferable to a linear IF amplifier in a RADAR receiver because it:
Has a greater dynamic range.
Has higher gain.
Is more easily aligned.
Has a lower noise figure.
8-22C5:
The high-gain IF amplifiers in a RADAR receiver may amplify a 2 microvolt input signal to an output level of 2 volts. This amount of amplification represents a gain of:
120 db.
60 db.
100 db.
1,000 db.
8-22C6:
In a RADAR receiver AGC and IAGC can vary between:
20 and 40 db.
10 and 15 db.
30 and 60 db.
5 and 30 db.
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● = Review
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● = Incorrect answer
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