👉 Radiotelephones are devices that transmit and receive audio signals using radio waves. They can be used for various purposes, such as telecommunication, entertainment, or even for emergency communications. In a traditional radio communication system, a transmitter sends a signal to an antenna at the receiver's location. The antenna then picks up the signal and converts it into electrical energy that is transmitted over the airwaves. This process is called modulation, which allows the signals to be transmitted at different frequencies and at varying speeds
