Ainda vão é escutar PLCs e depois dizem que é uma emissão codificada que vem do espaço!.eheheheh!<div><br></div><div>73 de CT4RK</div><div><br></div><div><br><br><div class="gmail_quote">2009/8/26 João Gonçalves Costa <span dir="ltr"><<a href="mailto:joao.a.costa@ctt.pt">joao.a.costa@ctt.pt</a>></span><br>
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<div><img height="213" src="http://www.sciencedaily.com/images/2009/08/090818150031-large.jpg" width="280"><img style="width:365px;height:213px" height="190" src="http://www.cv.nrao.edu/course/astr534/images/LWDA.jpg" width="365"></div>
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<h1>Long Wavelength Demonstrator Array</h1>
<p><font face="Verdana"><strong>ScienceDaily</strong> reports that scientists from
NRL's Space Science and Remote Sensing Divisions have generated the first
scientific results from the <strong>Long Wavelength Demonstrator Array</strong>
(LWDA).</font></p>
<p><font face="Verdana">The measurements were obtained during field tests and
calibration of two prototype antennas for the much larger Long Wavelength Array
(LWA), which will eventually consist of nearly 13,000 similar
antennas.</font></p>
<p><font face="Verdana">Utilizing radio emissions from the approximately 300
year-old Cassiopeia A (Cas A) supernova remnant (SNR)—one of the brightest
astronomical radio sources in the sky—to establish baseline measurements, NRL
scientist and National Research Council (NRC) postdoctoral fellow Dr. Jake
Hartman utilized the LWDA to confirm and extend a study initiated by fellow
NRL-NRC postdoc Dr. Joseph Helmboldt.</font></p>
<p><font face="Verdana">Once completed, the LWA will provide an entirely novel
view of the sky in the radio frequency range of 20-80 MHz, currently one of the
most poorly explored regions of the electromagnetic spectrum in
astronomy.</font></p>
<p><font face="Verdana">The LWA will be able to make sensitive high-resolution
images, scanning the sky rapidly for new and transient sources of radio waves
that may represent the explosion of distant massive stars or detect emissions
from planets outside of our own solar system and previously unknown objects or
phenomena.</font></p>
<p><font face="Verdana">Read the full story <em>Scientists Make First Discovery
Using </em><em>Revolutionary Long Wavelength Demonstrator Array</em>
at<br></font><a href="http://www.sciencedaily.com/releases/2009/08/090818150031.htm" target="_blank"><font face="Verdana">http://www.sciencedaily.com/releases/2009/08/<br>090818150031.htm</font></a></p>
<p><font face="Verdana">ScienceDaily<br></font><a href="http://www.sciencedaily.com/" target="_blank"><font face="Verdana">http://www.sciencedaily.com/</font></a></p>
<p><font face="Verdana"> </font></p>
<p><font face="Verdana">Thanks to <strong>George Boorer ZL3PN</strong> for
spotting this item</font><br></p></div>
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<br></blockquote></div><br><br clear="all"><br>-- <br>Best 73 from: regards from: CT4RK Carlos Mourato - Sines - Portugal<br><br> Save the Radio Spectrum! Eliminate Broadband over Power Line. Salve o espectro electromagnético!. Não use a rede electrica para transmitir dados. Os "homeplugs power line" e a tecnologia "power line" causa fortes interferencias noutro serviços sem voce se aperceber. Diga não à tecnologia power line. Proteja o ambiente<br>
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