Lets get the G's right !!!

Telephone (from the Greek words tele (τηλέ) = far and phone (φωνή) = voice) ". When Alexander Grahm Bell in 1867 sent a trans Atlantic telegraph message, no one would have known that wireless telephony would travel such a long journey.

First, It was radio. Did you know that radio was used to pass on orders and communications between armies and navies on both sides in World War I?. Germany used radio communications for diplomatic messages once it discovered that its submarine cables had been tapped by the British. The United States passed on President Woodrow Wilson's Fourteen Points to Germany via radio during the war.

Radio is essentially an one way communication device (called simplex communication). After radio came the wireless walky talky. Walky talky is a half duplex communication device. In half duplex mode, since only one radio frequency is used, only one person can talk at a time. It was terrible way of communication with each conversation needed to end with an "over". So, It didn't last for too long. Nevertheless, it provided an effective mean to communicate messages across the places where it was difficult to reach by wire or by shouting. So, in a sense, Walky Talkies were the starting (I would call it 0G) of the true wireless communication. World didn't see the first version of commercial wireless telephone system until AMPS (Advance Mobile Phone System) was launched in the year 1983 (The year I was born :) ) by Bell labs in America. AMPS was first generation (1G) wireless telephone technology. It was toward the voice (analog signal) only . So no digital data were being transmitted at this point. Next, we will look at the Digital wireless telephony that is 2G, 3G , in my next blog