KVLY-TV mast: Difference between revisions

KVLY-TV mast
KVLY-TV mast
	KVLY-TV mast
General information
Type	TV transmission tower
Location	Blanchard, Traill County, North Dakota
Coordinates	47°20′32″N 97°17′21″W / 47.34222°N 97.28917°W
Completed	August 13, 1963
Owner	Gray Television
Height	628.8 m (2,063 ft)
Design and construction
Architect(s)	Hamilton Directors
Main contractor	Kline Iron and Steel

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Revision as of 07:12, 19 March 2015

The KVLY-TV mast (formerly the KTHI-TV mast) is a 2,063 ft (628.8 m) tall

western hemisphere

, and the tallest radio mast in the world.

It is a

lists of tallest buildings

.

Location

The tower is located 3 miles (4.8 km) west of Blanchard, North Dakota, halfway between Fargo and Grand Forks. It became the tallest artificial structure, and the first man-made structure to exceed 2,000 feet (610 m) in height, upon the completion of its construction on August 13, 1963.

Construction

The tower was built by Hamilton Erection Company of York, South Carolina and Kline Iron and Steel, and took thirty days to complete, at a cost of US$500,000 (worth $4,976,087 today).

Owners

Owned by Hoak Media of Dallas, Texas, the tower broadcasts at 356 kW on channel 44 for television station KVLY-TV (channel 11 PSIP, an NBC affiliate) which is based in Fargo. The tower provides a broadcast area of roughly 9,700 sq mi (25,000 km²) which is a radius of about 55.6 miles (89.5 km).

When the mast was built the call letters of the television station for which it was built were changed to KTHI, the "HI" referring to the height of the mast. The top is reachable by a two-person service elevator or ladder.

Specifications

The tower consists of two parts: a

guy anchors.^[2]^[3]

Its height above mean sea level is 3,038 ft (926 m).

Federal rule change

Some time after its completion, the

rebuttable presumption against structures over 2,000 feet above ground level."^[4]

The FCC and FAA may approve a taller structure in "exceptional cases."

Images

KVLY tower from a distance of about one mile (1.6 km)
Base of the tower
A guy-wire anchor
Detail of the tower, showing its network of guy-wires
Some of the guy-wires that support the tower (with Stockbridge dampers)

Structures of similar height

KXJB-TV mast
(2060 ft - 627.8 m)
KXTV/KOVR Tower
(2049 ft - 624.5 m)

References

^ "N.D. TV Tower No Longer World's Tallest". All Things Considered. NPR.org. 5 January 2010. Retrieved 2011-12-06.
^ "KVLY-TV Tower". Emporis. Retrieved 2011-12-06.
^ "Info". Valleynewslive.com.}
^ "Antenna Tower Lighting and Marking Requirements". Federal Communications Commission. Retrieved 2011-12-06.

External links

KVLY Tower at Structurae
Tower web page at KVLY-TV
"Listing 1046244". Antenna Structure Registration database. U.S. Federal Communications Commission.
Listing on the Skyscraper Page
Drawings of KVLY/KTHI TV Mast from the Skyscraper Page
KVLY and KXJB Towers from PBPhase.com
Video of the KVLY Tower, summer 2009 from YouTube

Records
Preceded by WIMZ-FM-Tower	World's tallest structure 2,063 ft (628.8 m) 1963–1974	Succeeded by Warsaw radio mast
Preceded by Warsaw radio mast	1991–2008	Succeeded by Burj Khalifa

[npr-1] "N.D. TV Tower No Longer World's Tallest". All Things Considered. NPR.org. 5 January 2010. Retrieved 2011-12-06.

[emporis-2] "KVLY-TV Tower". Emporis. Retrieved 2011-12-06.

[valley-3] "Info". Valleynewslive.com.}

[fcc-4] "Antenna Tower Lighting and Marking Requirements". Federal Communications Commission. Retrieved 2011-12-06.

[2]

[3]

[4]

@@ Line 30: / Line 30: @@
 ==Specifications==
-The tower consists of two parts: a [[lattice tower]] of {{convert|1950|ft|m}};<ref name="npr">{{cite news| title= N.D. TV Tower No Longer World's Tallest| url=http://www.npr.org/templates/story/story.php?storyId=122258086| work=All Things Considered| date=5 January 2010| publisher=NPR.org| accessdate=2011-12-06}}</ref> topped by a [[transmitting]] antenna of {{convert|113|ft|m}}. The total height of both is 2,063 ft (628.8 m). The antenna weighs 9,000 pounds (4.3 tons; 4,300 kg), the lattice tower weighs 855,500 pounds (388 tons; 388,000 kg), giving a total weight of 864,500 pounds (392 tons; 392,100 kg). It takes up {{convert|160|acre|km2}} of land with its [[guy anchor]]s.<ref name="emporis">{{cite web| title=KVLY-TV Tower| url=http://www.emporis.com/application/?nav=building&lng=3&id=123700| publisher=Emporis| accessdate=2011-12-06}}</ref><ref name="valley">{{cite web| url=http://www.valleynewslive.tv/info/info_tower.html| title=Info| publisher=Valleynewslive.com}}{{dead link|date=December 2011}}</ref> Its height above mean sea level is {{convert|3038|ft|m|abbr=on}}.
+The tower consists of two parts: a [[lattice tower]] of {{convert|1950|ft|m}};<ref name="npr">{{cite news| title= N.D. TV Tower No Longer World's Tallest| url=http://www.npr.org/templates/story/story.php?storyId=122258086| work=All Things Considered| date=5 January 2010| publisher=NPR.org| accessdate=2011-12-06}}</ref> topped by a [[transmitting]] antenna of {{convert|113|ft|m}}. The total height of both is 2,063 ft (628.8 m). The antenna weighs 9,000 pounds (4.3 tons; 4,300 kg), the lattice tower weighs 855,500 pounds (388 tons; 388,000 kg), giving a total weight of 864,500 pounds (392 tons; 392,100 kg). It takes up {{convert|160|acre|km2}} of land with its [[guy anchor]]s.<ref name="emporis">{{cite web| title=KVLY-TV Tower| url=http://www.emporis.com/application/?nav=building&lng=3&id=123700| publisher=Emporis| accessdate=2011-12-06}}</ref><ref name="valley">{{cite web| url=https://web.archive.org/web/20100806003230/http://valleynewslive.tv/info/info_tower.html| title=Info| publisher=Valleynewslive.com}}}</ref> Its height above mean sea level is {{convert|3038|ft|m|abbr=on}}.
 ==Federal rule change==