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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.



Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Directional_array — Please support Wikipedia.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.
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39 news items

 
Radio magazine (press release)
Mon, 31 Oct 2011 15:16:30 -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 ...
 
Radio World
Fri, 05 Dec 2014 10:45:00 -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 ...
 
InAVate
Wed, 28 Mar 2012 07:03:45 -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 ...
 
PR Newswire (press release)
Thu, 02 Apr 2015 14:22:30 -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 (DSDA™), patented ...
 
Radio World
Mon, 23 Feb 2015 10:22:30 -0800

Let's suppose you have a tower near your directional array that's just within coordination distance, it's not detuned and it's 36.1 electrical degrees tall. This tower has never really been a problem to you, but you've known about it for years. Now the ...
 
PR Newswire (press release)
Mon, 26 Jan 2015 05:34:18 -0800

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 ...
 
Delta-Optimist
Fri, 15 May 2015 00:10:42 -0700

KRPI has plans to locate a directional array of five 12-storey antennas at Tyee Drive and McKenzie Way right as you enter Point Roberts and only 330 metres from Tsawwassen's southern border. The fight to stop the invasion of these 50,000-watt radio ...
 
All Access Music Group
Mon, 20 Jul 2015 04:03:45 -0700

... the denial of its challenge to the digital operations of NBC O&O WCAU-TV (NBC 10) and ABC O&O WPVI-TV (6ABC)/PHILADELPHIA, the tower for which GLOBAL contended caused problems for the directional array of its Ethnic WNWR-A/PHILADELPHIA.
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