Radio Receivers
Three-point tracking is achieved with

Double spotting
Variable selectivity
Double conversion
The padder capacitor

ANSWER DOWNLOAD EXAMIANS APP

Radio Receivers
The local oscillator of a broadcast receiver is tuned to a frequency higher than the incoming frequency

To permit easier tracking
To allow adequate frequency coverage without switching
To help the image frequency rejection
Because otherwise an intermediate frequency could not be produced

ANSWER DOWNLOAD EXAMIANS APP

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

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.
Leak-type bias must be used
The output must be tuned

ANSWER DOWNLOAD EXAMIANS APP