Thesi

Wireless telegraphy (i.e. Morse code).

the power required to do work at the rate of 1 joule per second, which is equal to the power dissipated in an electric circuit in which a potential difference of 1 volt causes a current of 1 ampere to flow. The symbol for watt(s) is W.

Who Are You? A telex command used to request the Answerback from another telex machine.

World–wide Met–Ocean Information and Warning Service. A service established by the World Meteorological Organisation for the purpose of coordinating the transmissions of meteorological warnings in defined geographical areas.

World–wide Navigational Warning Service. A service established by the International Hydrographic Organisation for the purpose of coordinating the transmissions of navigational warnings in defined geographical areas.