The problem took on its modern face when wireless radiocommunication came on the scene at the turn of the twentieth century. Wireless radio made communication possible between any two points, provided that two conditions were met: each party had to be equipped with an appropriate apparatus and both had to be tuned to the same wavelength or frequency. Each of these conditions raised an important issue that soon required international regulation. It soon became clear that effective use of the ‘air’ would require some kind of prescription of the use of certain wavelengths for certain purposes, but it would be another 30 years before such a system was put in place. A more substantial conference—31 governments as opposed to eight—followed in 1906, and culminated in the first International Radiotelegraph Convention. The treaty opened ship-to-ship and ship-to-shore communication for the first time, obliging operators to exchange messages irrespective of their corporate affiliation. A subsequent conference in London in 1912 refined the treaty.
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