The frequency range of radio-waves is ____

What is the frequency range of radio waves?

What is the frequency range of radio waves? How are radio waves produced?

The frequency of radio waves emitted by a satellite decreases as the satellite passes away from the _________ .

Long range radio transmission is possible when the radio waves are reflected from the ionosphere. For this to happen the frequency of the radio waves must be in the range:

Long range radio transmission is possible when the radiowaves are reflected from the ionosphere. For this to happen the frequency of the radio waves must be in the range: