In broadcast engineering, directional array refers to an antenna array arranged such that the superposition of the electromagnetic waves produce a predictable electromagnetic field. By spacing 2 or more antenna elements apart, changing the length of the transmission line from the transmitter, varying the power output, and shifting the phase, radio broadcasters can "shape" the area of signal coverage.
Geographically close co-channel or adjacent channel stations employ directional arrays (or a single directional antenna) so that other broadcasters may utilize the same or adjacent frequency. In the United States, the Federal Communications Commission offers a first-come, first-served approach, meaning licenses granted on co-channel or adjacent channels must protect the service contour of the previously licensed facility, thus, a directional array may be used to "shape" the station around existing facilities.
Tue, 09 Dec 2014 13:44:26 -0800
While Smith's mechanical computer speeded up the work of the directional array design, there was still a lot of effort required just to go through the printed patterns to find one that “might” fit your particular need and there was still a lot of work ...
Radio magazine (press release)
Mon, 31 Oct 2011 15:07:30 -0700
This month we will look at some of the basics of AM directional antennas, and in subsequent months delve deeper into the directional array. The first thing to remember about antennas is that every one is, in some way or another, directional. The only ...
Wed, 28 Mar 2012 07:13:22 -0700
The Bosch Vari-directional Array is reviewed by A. Mohammed Rafeeq, from Alpha Data, an IT company that operates in the UAE and has offices in Abu Dhabi and Dubai. The product covers a range up to 50m and generates an evenly distributed sound ...
Thu, 16 Oct 2014 11:11:15 -0700
The center of the argument is over whether he built-out the towers for the directional array. Cutforth certified they were built, but the bureau noted none of the five towers were complete and two special operating conditions on the permit hadn't been met.
PR Newswire (press release)
Wed, 27 Aug 2014 14:00:00 -0700
Andrea Electronics Corporation designs, develops and manufactures audio technologies and equipment for enhancing applications requiring high performance quality voice input. The company's patented Digital Super Directional Array (DSDATM), patented ...
The Plain Dealer - cleveland.com
Tue, 19 Aug 2014 17:34:29 -0700
Aug 20, 2014. It's confirmed...ManZeel control signals are emanating from Original Mattress Factory basement....known as ...OMFB... FlagShare. LikeReply. galenfist 5ptsFeatured Aug 20, 2014. OMF is orienting the Springs and Coils into a directional Array.
Radio & Television Business Report
Tue, 11 Nov 2014 12:59:00 -0800
It has 10 kW-U and a directional array that gives it tight coverage of the Cleveland urbanized area. Broker Michael Bergner also weighed in, noting that AM stations are a tough sell these days and adding that if the piecemeal approach to spinning them ...
PR Newswire (press release)
Mon, 28 Jul 2014 05:00:00 -0700
The company's patented Digital Super Directional Array (DSDATM), PureAudioTM and EchoStopTM far-field microphone technologies enhance a wide range of audio products to eliminate background noise and ensure the optimum performance of voice ...
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