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Show Arlington Sets Time for Ships at Sea by Radio How do ships at sea keep track of the correct time? By tho sun? Yes, but that's gone , out of use. for there is now a much more accurate method of setting the ?hlp's chronometer That's done by radio. Every day, beginning at 11 65 In the morning and 9.66 at night, radio I operators on board ships along the American coasts set thetr Instruments! for tho reception of a 2600-meter wavo. It comes from the high power 1'. R. naval station nt Arlington, Va From this station, at these hours every day, the exact tlmo Is transmitted transmit-ted in dots and daahoa to all radio operators tuning In. These dots and dashee come from the master clock at tho U. S. naval observatory Beginning at 11 06 an &;55, a dot is sent out by radio each second for tho first 30 seconds Then there la a lapse of ono second and the dots are resumed up to tho 65th second, when there Is another silence of five seconds sec-onds This system Is repeated each mln- ute, until tho 60 fn second of the f,9th , mlnut.- is read Ed. Then inntend of a lapse of f'.y nrrond.i there Is a .break of 1 o sei j.nds. At exactly 13110011 and 10 at night !a ditsh of thir-e seconds' duration Is transmitted T1i Is Is followed by an ilntorval of four oeconds, and the time signals are enc'is d with tho call lct-jters. lct-jters. -N A A." tliose of the Arlington 1 station. . fr-oo |