1. Atmospheric absorption occurs because of:

nitrogen content

pollution and carbon content

the distance traversed in atmospheric transmission

the water and oxygen content

2. The bandwidth of a signal is:

the average of the frequencies

the range of frequencies in the signal

the width of the spectrum

the minimum amplitude of the signal

3. In the telephone system, conversions are reproduced using the range from 300 - 3400 Hz in order to limit the required capacity of transmission lines.

True

False

4. An antenna with a fixed area receives more signal power.

True

False

5. _________ is the unwanted coupling between signal paths.

Thermal noise

Crosstalk

Intermodulation noise

Impulse noise