The WOI Tower is a 609.6 meter (2,000 feet) high guy-wire

Guy-wire

A guy-wire or guy-rope, also known as simply a guy, is a tensioned cable designed to add stability to structures . One end of the cable is attached to the structure, and the other is anchored to the ground at a distance from the structure's base...

d mast

Radio masts and towers

Radio masts and towers are, typically, tall structures designed to support antennas for telecommunications and broadcasting, including television. They are among the tallest man-made structures...

 located in Alleman, Iowa

Alleman, Iowa

Alleman is a city in Polk County, Iowa, United States. The population was 439 at the 2000 census. It is part of the Des Moines–West Des Moines Metropolitan Statistical Area.-History:Alleman was named for early settler John L. Alleman...

, north of the Des Moines urban area, at 41°48′33"N 93°36′54"W. It carries not only the signals of television station

Television station

A television station is a business, organisation or other such as an amateur television operator that transmits content over terrestrial television. A television transmission can be by analog television signals or, more recently, by digital television. Broadcast television systems standards are...

s WOI-TV

WOI-TV

WOI-DT, channel 5, is the ABC-affiliated television station licensed to Ames, and serving the Des Moines, Iowa market. Its studios are in West Des Moines...

 (channel 5), but also WHO-TV

WHO-TV

WHO-DT is a television station that broadcasts on Channel 13 in Des Moines, Iowa. It is affiliated with the NBC television network and serves most of central Iowa. The station transmits from the WOI Tower in Alleman, Iowa, which is actually owned by WHO-DT's owners. WHO-DT brands itself as WHO-HD...

 (channel 13), and KDIN

Iowa Public Television

Iowa Public Television is a state network of Public Broadcasting Service member non-commercial educational Public television stations in the state of Iowa. A member of the PBS, it is owned by the Iowa Public Broadcasting Board, an agency of the state education department which holds the licenses...

 (channel 11) as well as radio station

Radio station

Radio broadcasting is a one-way wireless transmission over radio waves intended to reach a wide audience. Stations can be linked in radio networks to broadcast a common radio format, either in broadcast syndication or simulcast or both...

 WOI-FM

WOI-FM

WOI-FM is a radio station licensed to Ames, serving the greater Ames/Des Moines area. The station is owned by Iowa State University. WOI-FM is an affiliate of Iowa Public Radio, and mostly carries the network's "Classical Network" service, in addition to NPR's Morning Edition and All Things...

 (90.1). The structure is one of the very few masts to have elevators.

The WOI Tower was completed in 1972 and is property of Local TV

Local TV

Local TV LLC is a limited liability corporation, owned by Oak Hill Capital Partners , which operates 18 local network-affiliated television stations in the United States.-History:...

, the owner of WHO-TV.