The Tallest Structure in Alaska Is a TV Broadcast Mast

Written by Christina Eck
Updated: September 6, 2023
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Alaska isn’t known to have many tall structures, but one notable one was the LORAN-C transmitter, Port Clarence. However, this structure was demolished on April 28, 2010, even though it stood at 1,350 feet. So, what is the tallest structure in Alaska now? 

Continue reading and discover Alaska’s tallest structure, seemingly a ladder to the clouds. Previously, the tallest structure in Alaska was the LORAN-C transmitter, Port Clarence. Still, the Knik TV Mast has now replaced it.

Why Did They Demolish the Port Clarence LORAN-C Transmitter?

LORAN-C is a radio navigation system that uses low frequencies to send radio signals to another system. Initially, it was designed to be used by coast guards to communicate between boats. This was mainly used in 1970 and the 1980s. 

Until 2010, LORAN-C broadcast signals to communicate between coast guards. However, on February 8, 2010, President Obama declared the system obsolete and terminated the use of them in the United States. Due to this, the LORAN-C transmitter Port Clarence was demolished as newer technology would soon replace the broadcast signals, such as GPS systems. 

What Is the Tallest Structure in Alaska?

map of State of Alaska through magnifying glass

Alaska had two tall structures, but one was demolished nearly a decade ago.

©Naruedom Yaempongsa/

After the demolition of the LORAN-C transmitter Pork Clarence, the next tallest structure became the Knik TV Mast. The structure is a TV guyed mast used by FM radio and television broadcasting. A guyed mast is a tall and thin vertical structure that uses guy lines to help support it.

The Knik TV Mast uses diagonal tensioned cables attached to the ground to help keep the structure from moving. Guyed masts are mainly used for radio towers that use antennas or function as massive radiator antennae. However, the company that owns the structure is Alaska Public Telecommunications, Inc. It stands at a height of 808 feet, equivalent to 246 meters.

Knik TV Mast Television

The TV mast broadcasts four programs: KAUU, KAK, KTUU-TV, and KYUR. KAUU is a television station that broadcasts in Anchorage, AK. It’s affiliated with CBS and is owned by Gray Television and NBC. KAKM, also known as virtual channel 7, is a PBS TV station licensed in Anchorage, AK. It is owned by Alaska Public Media and National Public Radio (NPR).

On the other hand, KTUU-TV is also a TV station in Anchorage, AK. Gray Television and CBS own the TV station. The last station the TV mast broadcasts is KYUR, virtual channel 13, affiliated with ABC and CW+. It’s located in Anchorage, AK, and Vision Alaska LLC owns it.

Knik TV Mast FM Radio

Two radio station programs are broadcast from the TV Mast, including KNBA and KSKA. KNBA is a radio station in Anchorage, AK, owned by Koahnic Broadcast Corporation. It’s an alternative music format program. On either hand, KSKA is a radio station in Anchorage, AK, that is a non-commercial station. It broadcasts NPS network and BBC World Service information.

How Tall Is the Knik TV Mast Compared to the Tallest Structure in the United States?

KRDK-TV mast from a mile away.

The KRDK-TV mast is the largest structure in the United States.

©Hephaestos at the English Wikipedia / CC BY-SA 3.0 – License

The tallest structure is the KRDK-TV Tower, located in North Dakota. It sits at 2,060 feet and is the tallest structure in the United States. Previously, the KYLY-TV tower used to be the tallest in the world, but similar to the LORAN-C transmitter, it was changed. An antenna was removed from the KVLY-TV tower, which brought the total height from 2,063 feet to 1,987 feet, making KRDK-TV tower the new tallest structure.

Where Is the Knik TV Mast on a Map?

The Knik TV Mast is located just outside of Knik, AK. This small town is in the Matanuska-Susitna Borough and is part of the Anchorage, Alaska, Metropolitan Statistical Area. So, if you were to pull up a map of Alaska, you would see that Knik is located near the mid-southern region of the state. 

What Animals Live Near the Knik TV Mast?

A Bald Eagle flying with the backdrop of one of Alaska's glacier's Grewingk.

Knik, AK, is home to Bad Eagles and many other wildlife.


Alaska is full of wildlife, but Knik has many animals around the town. There are commonly seen Alaskan animals such as the moose, caribou, and bald eagle. However, Knik, AK, is in a more mountainous area where animals such as Dall sheep, mountain goats, and lynx live. You might see other small animals, including porcupines, brown and black bears, and geese.

Knik, AK, is also home to one of the largest bird refuges, The Goose Bay State Game Refuge. You can find mallards, green-winged teal, pintails, and more here. Other commonly spotted birds include the northern shoveler, yellowlegs, sandhill cranes, and snipe.

Nearby streams like the Knik River have a dense fish population. Popular species include chinook salmon, sockeye, rainbow trout, and Dolly Varden. Some may also see Arctic graylings, northern pike, and Alaskan blackfish.

The photo featured at the top of this post is © thanongsak kongtong/

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About the Author

Christina Eck is a writer at A-Z Animals, primarily focusing on animals and travel. Christina has been writing about and researching animals for more than seven years. She holds a Bachelor's Degree from the University of Alaska, Anchorage, which she earned in 2019. As a resident of Washington State, Christina enjoys hiking, playing with her dog, and writing fiction and non-fiction pieces.

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