A combination of a resistor and capacitor is commonly used to reduce
This combination of components will usually be found
a. movable parts of shielding.
c. telegraph relay keying contacts.
Peak limiters improve S/N in terminal equipment that demodulates an
FM-type signal. However, peak limiters cannot be used on AM signals because
a. distort the quality of the signals.
b. limit the bandpass and prevent passage of all signal elements.
balance out the carrier, leaving only the sidebands to heterodyne
and create distortion.
d. remove selected noise components and in the process remove desired
When two adjacent AM signals are received, the carriers sometimes
interact and cause heterodyning. This condition usually causes
b. the receiver to pick up the stronger of the two signals, to the
detriment of the weaker.
c. an increase in the background noise due to the reduction of AGC
d. the peak limiters to react, thus improving the S/N by clipping the