Abstract: A method and apparatus for use in combination with a communications system, such as, a two-way radio which will simulate human voice at the level of a common microphone has been devised wherein the host radio has a transmit and receive mode for the transmission and reception of voice messages. The system has a memory device with at least one pre-encoded message permanently stored therein and a voice generator operative to convert the pre-encoded message into electrical analog voice signals which simulate the human voice. The device is programmable to extract one message from the memory and repetitively transmit the message at spaced time intervals to the voice generator. A relay control interconnects the voice generator and host radio for broadcasting the voice signals from the voice generator and is also capable of automatically converting the host radio to the receive mode for the reception of messages from an external source during the spaced time intervals between the transmission of the voice signals.