Ebright Azimuth

<h2 id="description">Description</h2>
<p>The Ebright Azimuth<a class="footnote-ref" id="fnref:1" href="#fn:1"><sup>1</sup></a> is located about 6.5 miles (10.5 km) north of downtown <a href="/facts/Wilmington,_Delaware/EQuEyMQw">Wilmington</a>, <a href="/facts/Delaware/4n4I3Rhu">Delaware</a>, in far northern <a href="/facts/New_Castle_County,_Delaware/0bXAwBrh">New Castle County</a>, approximately 500' horizontal distance from the Delaware-Pennsylvania border.<a class="footnote-ref" id="fnref:2" href="#fn:2"><sup>2</sup></a> It is near <a href="/facts/Concord_High_School_(Delaware)/KUQm1h8g">Concord High School</a>, to the north of <a href="/facts/Delaware_Route_92/E9f2eRS0">Naamans Road</a>, at the middle of the intersection of Ebright Road and Ramblewood Drive. This is an entrance to the Dartmouth Woods development.
</p><p>Surveying by <a href="/facts/Delaware_Geological_Survey/Cq59DqjG">Delaware Geological Survey</a> personnel indicates that the mobile home park just west of Ebright Road is at least 2 feet (61 cm) higher than the benchmark.<a class="footnote-ref" id="fnref:3" href="#fn:3"><sup>3</sup></a><a class="footnote-ref" id="fnref:4" href="#fn:4"><sup>4</sup></a>
</p><p>Ebright Azimuth is named after James and Grant Ebright, who owned the property on which the benchmark was placed.<a class="footnote-ref" id="fnref:5" href="#fn:5"><sup>5</sup></a> An <a href="/facts/Azimuth/kEyt9nJ3">azimuth</a> is an angular measurement in a spherical coordinate system.
</p><p>Since the schematic photograph was taken the blue and yellow monument sign has been moved across the street closer to the <a href="/facts/Survey_marker/tHWSQXeD">geodetic marker</a>. A curb extension has been installed, and the area around the sign has been modestly landscaped.
</p>
<h2 id="radio-tower-history">Radio tower history</h2>
<p>The self-supporting <a href="/facts/Radio_masts_and_towers/Xh2FLXuK">radio tower</a> just south of the benchmark was constructed in 1947 by <a href="/facts/Western_Union/wvTqtCY1">Western Union</a> as part of a historic <a href="/facts/C_band_(IEEE)/vLddLTc2">C-band</a> <a href="/facts/Microwave_radio_relay/bz9H9Ete">microwave radio relay</a> system that linked <a href="/facts/New_York_City/YlyvFmVC">New York City</a> and <a href="/facts/Washington,_D.C./enXPK156">Washington, D.C.</a>  This site was assigned the name "Brandywine" in recognition of <a href="/facts/Brandywine_Creek_(Christina_River)/H0rj9P6o">Brandywine Creek</a> located several kilometers to the west and was licensed with the <a href="/facts/Call_sign/k3Y1upDl">call sign</a> KGB29.<a class="footnote-ref" id="fnref:6" href="#fn:6"><sup>6</sup></a>
Western Union's engineers specified a heavy-duty prefabricated <a href="/facts/Fire_lookout_tower/wyA7zz0R">fire tower</a> structure, which allowed the microwave transmitters and receivers to be installed inside the cab.  <a href="/facts/Parabolic_antenna/8EpLcN6q">"Dish" antennas</a>, mounted behind the window openings, were aimed towards the adjacent relay stations at <a href="/facts/Mount_Laurel_Township,_New_Jersey/lumFlFuv">Mt. Laurel, New Jersey</a>, 33.8 miles (54.4 km) to the northeast, and Elk Neck near <a href="/facts/Elkton,_Maryland/lLYDMaRp">Elkton, Maryland</a>, 30.5 miles (49.1 km) to the southwest.<a class="footnote-ref" id="fnref:7" href="#fn:7"><sup>7</sup></a>
</p><p>Like most of their early microwave relay sites, Western Union decommissioned the Brandywine installation near Ebright Azimuth as more-reliable broadband <a href="/facts/Fiber-optic_communication/dc6S0Hg5">fiber</a> systems were developed.  The structure now supports several <a href="/facts/VHF/8V90M1Sl">VHF</a> and <a href="/facts/UHF/S6XDUaDY">UHF</a> <a href="/facts/Land_Mobile_Radio_System/mkV1JFFr">land mobile radio</a> antennas.
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<h2 id="see-also">See also</h2>
<ul><li> Geography portal</li>
<li> Mountains portal</li>
<li><a href="/facts/List_of_U.S._states_by_elevation/AEh6xdnz">List of U.S. states by elevation</a></li></ul>

<h2 id="external-links">External links</h2>

<a href="/facts/Wikimedia_Commons/lzkBFxTg">Wikimedia Commons</a> has media related to:
Ebright Azimuth

<ul><li><a href="http://archives.delaware.gov/markers/">"Historic Markers with Google Maps"</a>. State of Delaware. Retrieved 2008-12-17.</li></ul>

<h2 id="references">References</h2>

<ol>
<li id="fn:1"><p>"Ebright". NGS Data Sheet. National Geodetic Survey, National Oceanic and Atmospheric Administration, United States Department of Commerce. <a href="https://www.ngs.noaa.gov/cgi-bin/ds_mark.prl?PidBox=JU3626" target="_blank">https://www.ngs.noaa.gov/cgi-bin/ds_mark.prl?PidBox=JU3626</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li>
<li id="fn:2"><p>"Ebright Azimuth : Climbing, Hiking & Mountaineering : SummitPost". www.summitpost.org. Retrieved 2025-03-16. <a href="https://www.summitpost.org/ebright-azimuth/154722" target="_blank">https://www.summitpost.org/ebright-azimuth/154722</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li>
<li id="fn:3"><p>"Highest Point in Delaware". Delaware Geological Survey. Retrieved 2008-12-17. <a href="http://www.dgs.udel.edu/delaware-geology/highest-point-delaware" target="_blank">http://www.dgs.udel.edu/delaware-geology/highest-point-delaware</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li>
<li id="fn:4"><p>"Regarding the highest point in Delaware". Delaware Repeater Association. Archived from the original on 2009-03-06. Retrieved 2008-12-17. <a href="https://web.archive.org/web/20090306204724/http://www.dra73.org/highestpoint.html" target="_blank">https://web.archive.org/web/20090306204724/http://www.dra73.org/highestpoint.html</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li>
<li id="fn:5"><p>"Ebright". NGS Data Sheet. National Geodetic Survey, National Oceanic and Atmospheric Administration, United States Department of Commerce. <a href="https://www.ngs.noaa.gov/cgi-bin/ds_mark.prl?PidBox=JU3626" target="_blank">https://www.ngs.noaa.gov/cgi-bin/ds_mark.prl?PidBox=JU3626</a> <a href="#fnref:5" class="footnote-back-ref">↩</a></p></li>
<li id="fn:6"><p>"Radio Stations Operated by the Western Union Telegraph Company" (JPG). Plant and Engineering Department. Western Union Telegraph Company (archived by A Secret Landscape). 1959. Retrieved 2008-12-17. <a href="http://coldwar-c4i.net/WU/station_list_1.jpg" target="_blank">http://coldwar-c4i.net/WU/station_list_1.jpg</a> <a href="#fnref:6" class="footnote-back-ref">↩</a></p></li>
<li id="fn:7"><p>"Radio Relay Systems". New York, Washington, Pittsburg. archived by A Secret Landscape. Retrieved 2008-12-11. <a href="http://coldwar-c4i.net/WU/DC_Pitts_NYC-map.jpg" target="_blank">http://coldwar-c4i.net/WU/DC_Pitts_NYC-map.jpg</a> <a href="#fnref:7" class="footnote-back-ref">↩</a></p></li>
</ol>

Ebright Azimuth open-in-new

Ebright Azimuth