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THE DEVELOPMENT OF AN IMPROVED ULTRA-HIGH-FREQUENCY RADIO FAN MARKER

机译:改进的超高频无线电风扇标记的研制

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An antenna system, similar to the four-element array described in Safety and Planning Division Report No. 5, except operating above a wire-mesh counterpoise, was installed and tested at the Howie, Md., light beacon. Im¬provements in the method of conducting energy from the transmitter to the antenna were incor¬porated in this installation. The system was found to produce patterns equivalent, to those measured for the former antenna and to be relatively free of variations caused by snow, sleet, or growth of vegetation

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