Communications

A balanced modulator is sometimes called

The difference between the IF and the BFO frequencies is called

A system that provides narrowband voice communications for land mobile services with nearly the quality acheived with FM systems and do it using less than one-third the bandwidth

It is a multipexing method that uses double-sideband suppressed-carrier transmission to combine two information sources into a single composite waveform

An SSB transmitter has an average output power equal to _______ of that PEP rating.

Noise interferes mainly with modulating signals that are

Which of the ff is true about the NE566 IC

Over a narrow range of frequencies, the PLL acts like a

The output of a PLL frequency demodulator is taken from the

It is also known as upward or downward modulation

Demodulating quadrature AM signal requires a carrier recovery circuit to reproduce the original carrier frequency and phase and two balanced modulators to actually demodulate the signals. This is called

Quadrature amplitude modulation is also known as _________

For public safety transmitters, what is their maximum deviation value?

What signal sensitivity do most good receivers have?

How does the adder differ from the mixer?

In stereo FM, of the total modulation, what percent in main channel?

In stereo FM, of the total modulation, what percent in pilot subcarrier?

Where is the de-emphasis added in stereo FM receiver?

A circuit used to select the desired output from a mixer

What is usually used to demodulate SSB or CW signal?