This invention generally relates to Morse code sending keys systems. More specifically, this invention relates to a wireless key system that can select a particular amateur radio transmitter on a crowded radio bench and direct it to send Morse code messages in a continuous wave (CW) transmission mode without a physical wired connection between the wireless key and said radio transmitter. The wireless keying system is comprised of a Telegraph Instrument Encoding Unit (TIEU) and a Dit/Dah Decoding Unit (DDU). The TIEU electrically encodes the telegraph contact closures and emits an electro-optical signal, mimicking the closures made by the telegraph key. The DDU detects the emitted electro-optical signal and generates electrical signals for keying on and off the amateur radio transmitter chosen. This wireless keying system supports the transfer of Morse code signals from a telegraph hand key, a paddle key, and those generated by a computer.