There are two different types of waves

There are two different types of waves, mechanical and electromagnetic. Mechanical waves can be longitudinal and transverse, and they require a medium to travel through, like sound. Electromagnetic waves on the other hand do not need a medium to travel through, like light waves. The electromagnetic spectrum has 7 different frequencies of waves. There are radio waves, microwaves, infrared radiation, Visible light, ultraviolet, x-rays, and gamma rays. Microwaves have the second longest wavelength and the second smallest frequency. Microwaves’ frequency range from 1(10^8) to 3(10)^11).
Analog transmission is made of constant streaming data. For example in the visible light spectrum, you don’t just see blue and green, you see all the colors in between. This is an example of analog transmission. Digital transmission are the opposite of analog transmission in that they are not continuous data. It is like a light switch; it is on or off.