KHildebrandt

Nikolai Tesla invented wireless communication in the 1880s. the difference between cell phones and walkie talkies are that cb radios are hlf duplex devices so two people talking on a cb radio can communicate using the same frequency. Cell phones are full duplex devices so you can talk on one frequency and listen on another. Cell phones are called that because they are made up of multiple cells. Cell phones send and recieve messages by using one frequency to send messages and one to recieve it.