Wireless telegraphy is transmission of messages over radio with telegraphic codes. With the invention of the teletypewriter, telegraphic encoding became fully automated. This allowed both telegraphic and voice transmissions. There was fervour for telegraphic information transfer. A telephone and telegraphic links were also installed. The set is intended for reception of telegraphic and telephone (AM) signals. Following Federation, the Commonwealth Government took charge of post and telegraphic services. Edison began developing a multiplex telegraphic system, which could send two messages simultaneously, in 1874. Favoured perches include electric or telegraphic wires. The PMG Department progressively improved telegraphic equipment. In Expressionist drama, the speech may be either expansive and rhapsodic, or clipped and telegraphic. All wagons for public traffic had a code name that was used in telegraphic messages. These numerous ingenious experimental designs were precursors to practical telegraphic applications. A telegraphic station was established in 1894. In 1906, Telegraphic Service Co. became .