Communications

__________ is the function which tends to maintain the sound volume level of a voice receiver nearly constant for a large signal strength range.

What device is incorporated in a communications receiver to reduce impulse noise?

What type of signal in which a receiver selectivity of 2.4 kHz in the I-F circuitry is optimum?

If the input to a detector stage is an amplitude-modulated (A3E) IF signal then the output from the stage is

In a capacitive type, reactance-tube modulator connected across in oscillator tuned circuit, a more negative voltage on the grid of the reactance tube will cause

The limiting condition for sensitivity in a communications receiver is

When a communications receiver is tuned to a strong signal, the AGC bias is measured and found to be zero. The fault cannot be caused by a/an

The term used to refer to the condition where the signals from a very strong station are superimposed on other signals being received.

The limiter stage of an FM receiver.

Motorboating (low-frequency oscillations) in an amplifier can be stopped by

An effect in which, the modulation of an unwanted signal is transferred to the desired carrier

Leads should be kept as short as possible in radio circuit so that

The number of voice transmissions that can be packed into a given frequency band for amplitude-compandored single-sideband systems over conventional FM-phone systems.

Neutralization of an RF amplifier stage can be necessary in order to

The ability of a communications receiver to perform well in the presence of strong signals outside the band of interest is indicated by what parameter?

Stages that are common to both AM and FM receivers.

Occurs during CW reception if too narrow filter bandwidth is used in the IF stage of a receiver

A type of emission is produced when an amplitude modulated transmitter is modulated by a facsimile signal.

Type of emission produced when an amplitude modulated transmitter is modulated by a television signal.

The result of cross-modulation is that