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

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Radio Receivers
In a broadcast superheterodyne receiver, the

RF amplifier normally works at 455 kHz above the carrier frequency
Mixer input must be tuned to the signal frequency
Local oscillator frequency is normally double the IF
Local oscillator operates below the signal frequency

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