A pathway through which information is transmitted from one place to another is called communication channel. It is also denoted to as communication medium or link. The twisted pair wire, coaxial cable, fiber optic cable, microwave, satellite etc. are examples of communication channels. In a communication channel, data is transmitted in the form of signals. The data transmission is measured in bandwidth. The bandwidth will be higher if more signals can be transmitted.
Different transmission media have different bandwidths. The higher the bandwidth of the transmission media, the more information can be transmitted. Radioworld is radio Equipment Company of UK that deals in variety of communication tools. Visit http://www.radioworld.co.uk/