Microwaves
Microwaves have shorter frequency than radio waves and are shorter wavelengths than them but are still considered one of the longer wavelengths. Some microave advantages are that they don't need any cables. Another advantage is that there are mutiple channels available. The third advantage is that there is a large bandwith. There are many disadvantages too. One of them is that the lign-of-sight will be distrupted if any obstacle is in its way, such as a new building. Another disadvantage is that microwaves suffer from attenuation because of what is in the atmosphere. The last disadvantage is that the towers are expensive to build. The future possibilities is that microwaves might be able to be used in airplanes,sattelites,etc.