The intermediate frequency is the _________ oscillator frequency and radio frequency.

The component of the modulated wave, which has a greater frequency than that of the carrier is called __________.

After the angle of refraction becomes 90^o at the ionosphere, the wave travels _________.

Skip distance the shortest distance between ______________.

Long distance radio communication employs _______ wave propagation.

When the transmitting and receiving antennas are close to the ground, the type of radio-wave propagation is_________ propagation.

The radio waves can be sent from one place to another through _________ propagation.

The most commonly, employed modulation in satellite communication is the _____________.

An EM wave travels in free space, only one of the following can happen to them ________________.

In modulation process radio frequency wave is termed as ______________.

In frequency modulation _____________.

A gound receiver in line of sight communication cannot receive direct waves due to _______________.

FM broad cost is preferred over AM broadcast because _______________.

The made of propagation used by short wave broadcast services is _______________.

Which of the following is an example of breadcast made of communication?

Large band width for higher data is achieved by using ________________.

Modulation is the process of superposing _______________.

The loss of strengh of a signal while propagating through a medium is known as_________.

The internationally accepted frequency deviation for the purpose of FM broadcasts ____________.

The signal is aff ected by noise in a communication system _____________.