Depending on the frequency band (also called the frequency range), the way radio waves propagate and the amount of transmittable information differ. Generally, as shown below, the higher the frequency is, the easier it is for radios waves to propagate in a straight line and the larger the amount of transmittable information is. In contrast, the lower the frequency is, the easier it is for radio waves to diffract and the smaller the amount of transmittable information is.

Looking in detail, there are more characteristics associated to different frequencies.