If you want to understand wireless networking at its simplest level, think about a pair of $5 walkie-talkies. These are small radios that can transmit and receive radio signals. When you talk into a walkie-talkie, your voice is picked up by a microphone, encoded onto a radio frequency and transmitted with the antenna. Another walkie-talkie can receive the transmission with its antenna, decode your voice from the radio signal and drive a speaker. Full Story...