Which parameter is referred to as receiver sensitivity?

A passive circuit, usually consisting of capacitance and/or inductance, that is inserted in series with the a-c power cord of an electronic device which allow the 60-Hz current to pass and suppressed high frequency noise components.

A single measuring circuit having a resistor if 10 kΩ is connected in series with a 0.5 μF capacitor. What is affective bandwidth?

_____ frequencies are exact multiples of the fundamental frequency.

Sound that vibrates at frequency too high for the human ear to hear (over 20 kHz)

Signal whose physical quantity varies continuously with time

Frequencies above _____ kHz, are referred to as the radio frequencies

Which of the following is not a simplex communication system?

Wireless local-area networks occupy which of the following segments?

Noise figure is a parameter that represents a ______ of the system

Signals generated at frequencies above and below a carrier frequency by an amount equal to the modulating frequency are called

These are bend of light wavelengths that are too short to be seen by the human eye.

The first complete system of wireless communications was provided by

Just above the infrared region is the spectrum referred to as

A system having an input power of 2 mW an output power of 0.8 mW has a loss of:

A circuit often used in radio receivers that prevents externally generated noise from exceeding certain amplitude. They are also called noise clippers.

When the power ratio of the output to input of a circuit is 200. What is the gain in dB?

Signal whose physical quantity varies continuously with time

A passive circuit, usually consisting of capacitance and/or inductance, that is inserted in series with the a-c power cord of an electronic device which allow the 60-Hz current to pass and suppressed high frequency noise components.

What is the main purpose of a communications system?