Ebright Azimuth
{{Short description|Hill in Delaware, United States}}
{{Infobox mountain
| name = Ebright Azimuth
| photo = Ebright Azimuth sign - SEP 2016.jpg
| photo_caption = The monument sign for Ebright Azimuth, the highest point in Delaware as of September 2016
| elevation_ft = 448
| prominence_ft = 32
| prominence_ref = {{cite peakbagger |pid=7156 |name=Ebright Azimuth, Delaware |access-date=2012-10-17}}
| listing = U.S. state high point 49th
| map = Delaware#USA
| map_size = 180
| map_caption = Location of Ebright Azimuth in Delaware
| label_position = left
| location = New Castle County, Delaware, United States
| coordinates = {{coord|39.83574|N|75.51915|W|type:mountain_scale:100000|format=dms|display=inline,title}}
| easiest_route = Paved road
}}
File:Ebright Azimuth Delaware Sign 3008px.jpg
The Ebright Azimuth is the point with the highest benchmark monument elevation in the U.S. state of Delaware. It is marked with a geodetic benchmark monument and has an elevation of {{convert|447.85|ft|m|2}} above sea level. The only state high-point with a lower elevation is Britton Hill in the state of Florida at {{convert|345|ft|m|0}} above sea level.
Description
The Ebright Azimuth{{cite ngs |pid=JU3626 |name=Ebright}} is located about {{convert|6.5|mi|km|1}} north of downtown Wilmington, Delaware, in far northern New Castle County, approximately 500' horizontal distance from the Delaware-Pennsylvania border.{{Cite web |title=Ebright Azimuth : Climbing, Hiking & Mountaineering : SummitPost |url=https://www.summitpost.org/ebright-azimuth/154722 |access-date=2025-03-16 |website=www.summitpost.org}} It is near Concord High School, to the north of Naamans Road, at the middle of the intersection of Ebright Road and Ramblewood Drive. This is an entrance to the Dartmouth Woods development.
Surveying by Delaware Geological Survey personnel indicates that the mobile home park just west of Ebright Road is at least {{convert|2|ft|cm|0}} higher than the benchmark.{{cite web|url=http://www.dgs.udel.edu/delaware-geology/highest-point-delaware|title=Highest Point in Delaware|publisher=Delaware Geological Survey|access-date=2008-12-17}}{{cite web|url=http://www.dra73.org/highestpoint.html|archive-url=https://web.archive.org/web/20090306204724/http://www.dra73.org/highestpoint.html|archive-date=2009-03-06|title=Regarding the highest point in Delaware|publisher=Delaware Repeater Association|access-date=2008-12-17 }}
Ebright Azimuth is named after James and Grant Ebright, who owned the property on which the benchmark was placed. An azimuth is an angular measurement in a spherical coordinate system.
Since the schematic photograph was taken the blue and yellow monument sign has been moved across the street closer to the geodetic marker. A curb extension has been installed, and the area around the sign has been modestly landscaped.
Radio tower history
The self-supporting radio tower just south of the benchmark was constructed in 1947 by Western Union as part of a historic C-band microwave radio relay system that linked New York City and Washington, D.C. This site was assigned the name "Brandywine" in recognition of Brandywine Creek located several kilometers to the west and was licensed with the call sign KGB29.{{cite web|url=http://coldwar-c4i.net/WU/station_list_1.jpg|title=Radio Stations Operated by the Western Union Telegraph Company|work=Plant and Engineering Department|publisher=Western Union Telegraph Company (archived by A Secret Landscape)|year=1959|format=JPG|access-date=2008-12-17}}
Western Union's engineers specified a heavy-duty prefabricated fire tower structure, which allowed the microwave transmitters and receivers to be installed inside the cab. "Dish" antennas, mounted behind the window openings, were aimed towards the adjacent relay stations at Mt. Laurel, New Jersey, {{convert|33.8|mi|km}} to the northeast, and Elk Neck near Elkton, Maryland, {{convert|30.5|mi|km}} to the southwest.{{cite web|url=http://coldwar-c4i.net/WU/DC_Pitts_NYC-map.jpg|title=Radio Relay Systems|work=New York, Washington, Pittsburg|publisher=archived by A Secret Landscape|access-date=2008-12-11}}
Like most of their early microwave relay sites, Western Union decommissioned the Brandywine installation near Ebright Azimuth as more-reliable broadband fiber systems were developed. The structure now supports several VHF and UHF land mobile radio antennas.
See also
- {{portal-inline|Geography}}
- {{portal-inline|Mountains}}
- List of U.S. states by elevation
References
{{reflist|33em}}
External links
{{commons+cat|Ebright Azimuth}}
- {{cite web|url=http://archives.delaware.gov/markers/|title=Historic Markers with Google Maps|publisher=State of Delaware|access-date=2008-12-17}}
{{Delaware}}
{{U.S. State Highest Points}}
Category:Landforms of Delaware