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Show BAY FOG SHIP IS GUIDED BY RADIO COMPASS WASHINGTON, March I. When the blind tray fog rolls 'down over the entrance to Chesapeake Chesa-peake bey and aad voiced fog horns bellow " 'ware shoal," a stubby government craft plows out into the thick of it to p plot a new course of safety for those who come up from, the sea In ships. Aboard the tender, as the shouN In of the fog horns grows vsgue In her wske and blurred In the baffling folda of the mist, men of the lighthouse service lean above the great dial of a new radio compass. com-pass. Out of the air, minute by minute as the distant horns wail, impulses come from three points to set the direction needle wavering to point the way first toward one and then another danger far ahead. And from the readings of the com pass, a course Is laid back Into harbor In defiance of the fog and Ita perils. The testa are being made by the lighthouse service In cooperation with the bureau of standards and have to do with learning the efficiency of devices - for prjecting automatic radio alg-nala alg-nala from fog stationa to aupple-ment aupple-ment the mournful hooting of the horns. Kventually every lighthouse light-house and llghtahlp may thua hurl Ita warnln- out far beyond the range of aight or hearing for conservative con-servative government reports ssy the experiments "give excellent promise of the success of this Probably greatest advance In fog signal engineering." |