Radio Receivers
If the intermediate frequency is very high (indicate false statement)

The selectivity will be poor
Image frequency rejection is very good
Tracking will be improved
The local oscillator need not be extremely stable

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Radio Receivers
Show which of the following statements about the amplitude limiter is untrue:

The output must be tuned
Leak-type bias must be used
When the input increases past the threshold of the limiting, the gain decreases to keep the output constant.
The circuit is always biased in class C, by virtue of the leak-type bias.

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Radio Receivers
If a FET is used as the first AF amplifier in a transistor receiver, this will have the effect of

Improving the effectiveness of the AGC
Reducing the effect of negative-peak clipping
Improving the selectivity of the receiver
Reducing the effect of noise at low modulation depths

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