ListenTalk by Listen Technologies is an amazing system, one piece of hardware can be transmitter/receiver/transceiver. It is useful for tour groups, translation, intercom, and much more. Be sure to check it out: https://proaudio.com/catalog/listen-series.asp | ProAudio.com | Facebook

Radio Transmitter Working Animation | AM and FM | Modulation A radio transmitter is a key electronic device in telecommunications that converts audio, video, or digital data into radio waves and sends them through space without the need for any physical medium such as wires. This video explains how a transmitter generates a carrier wave, adds information through modulation (AM & FM), amplifies the signal, and finally radiates it into space using an antenna. | Fadhel Mahdi