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570 WNAX.png
City Yankton, South Dakota
Broadcast area Sioux City, Iowa
Sioux Falls, South Dakota
Omaha, Nebraska
Lincoln, Nebraska
Branding WNAX Radio 570
Slogan The Voice of the Midwest
Frequency 570 AM (kHz)
Translator(s) 99.9 K260BO (Yankton)
Format Commercial; News/Talk
Power 5,000 watts
ERP 250 watts (FM translator)
Callsign meaning None (sequentially assigned)[1]
Affiliations CBS
Owner Saga Communications
Sister stations WNAX-FM
Webcast Listen Live
Website WNAX.com

WNAX (570 AM) is a radio station in Yankton, South Dakota, currently owned by Saga Communications, which broadcasts a News/Talk format. Due to the flat landscape of the upper Great Plains and the high ground conductivity of the terrain, plus WNAX's low frequency compared to most other AM stations, the station's 5,000-watt signal covers large portions of South Dakota, Nebraska, Iowa, Kansas, Minnesota, Missouri and North Dakota. Among U.S. stations its daytime land coverage is exceeded only by KFYR in Bismarck, North Dakota, and in addition to its home market of Sioux City and Sioux Falls, WNAX provides a strong grade B signal to Omaha and Lincoln. During the day, it can be heard as far south as Kansas City, as far north as Fargo and well east of Des Moines.[2]


WNAX was first licensed on November 7, 1922 to the Dakota Radio Apparatus company,[3] and is the oldest surviving radio station in the state of South Dakota. The call-letters came from a sequentially assigned list, and WNAX was the last station in the state to receive a callsign starting with a W instead of K (other than sister station WNAX-FM), as additional stations in the state were established after the January, 1923 shift that moved the K/W call letter boundary from the western border of South Dakota to the Mississippi River. WNAX was purchased by Gurney's Seed and Nursery Company in 1926 and became known as "WNAX—Voice of the House of Gurney in Yankton". The station was used to promote Gurney products and services, making Gurney's a household name.[4] In 1957, Cowles Broadcasting Corporation sold the station to Peoples Broadcasting Corporation, a subsidiary of Nationwide Mutual Insurance Co., which, in turn, was an affiliate of the Ohio Farm Bureau Federation. Peoples Broadcasting was then the owner of KVTV-TV (now KCAU-TV).

On February 10, 1933, the Federal Radio Commission authorized an increase in daytime power from 1,000 watts to 2,500 watts.[5] Less than two years later, December 18, 1934, the new Federal Communications Commission authorized another increase in power, to 5,000 watts.[6]

1960 advertisement for Peoples Broadcasting Corporation, later known as Nationwide Communications Corporation, a subsidiary of the Nationwide Mutual Insurance Co. (Note the Nationwide "eagle" logo inside the Peoples microphone logo)

The radio station launched the careers of many stars, both local and national. Starting in the late 1920s, Lawrence Welk spent a decade performing daily without pay on WNAX. In 1939, Wynn Hubler Speece started her radio program and became known regionally as "Your Neighbor Lady". Speece was still continuing to do her Marconi Award winning broadcast more than sixty years later when WNAX celebrated its eightieth anniversary in 2002. Other well-known regional radio personalities from WNAX have included Norm Hilson, Whitney Larson, "Happy" Jack O'Malley, Bob Hill, Ed Nelson, Steve (Mike) Wallick, George B. German, and the hillbilly performers on the WNAX Missouri Valley Barn Dance show.[7]

In October 2005 Speece announced her retirement after almost 66 years of continuous broadcasting. She died on October 22, 2007, at 90 years of age.[8]

In 1983 a fire destroyed the main WNAX building. All of the station's historic live recordings as well as thousands of records were destroyed. The staff of WNAX went to the station's transmitter site and continued broadcasting. Eventually, the station recovered when a new building was constructed on Highway 50 in Yankton.

In 1942 the station built a tower at Yankton at 929 feet (283 m), which was the tallest radio broadcasting tower at the time.[9]

The current tower is 911 feet (278 m) tall.

Today WNAX continues many of the traditions started in 1922 with frequent news, sports, weather and farm market updates. The station continues to be affiliated with CBS Radio, an association that began in the late 1920s.

WNAX is also the flagship for South Dakota State University sports. WNAX also carries Minnesota Twins baseball and Minnesota Vikings football.

Honors and awards[edit]

In May 2006, WNAX won one first place in the commercial radio division of the South Dakota Associated Press Broadcasters Association news contest.[10]


  • Steve Crawford—Morning Show Host
  • Jerry Oster—News Director
  • Steve Imming—Morning Sports
  • Eric Roozen—Sports Director/FM Midday Host
  • Jim Reimler—AM Midday
  • Dee Davis—AM Midday FM Afternoon Host/ PSA Director/ Web Master
  • Zach Pugh-News/AM Drive Time Fill In
  • Stafford D. Thompson- AM Morning
  • Michelle Rook—Farm Director
  • Tom Riter—Farm Reporter/ Co-Host Drive Time
  • Fred Forman—Host of Drive Time AM Afternoons
  • Sean D- FM Morning Host
  • Benji Knight- FM Morning Host/ Music Programmer


  1. ^ Radio Service Bulletin, December 1, 1922, "New Stations" section, page 3. Other new stations granted during the month of November, 1922 included WNAQ, Charleston, SC, WNAV, Knoxville, TN, WNAW, Fort Monroe, VA, and WNAY, Baltimore, MD. (A fanciful Folk etymology later developed that WNAX's call letters stood for "North American radio eXperiment".)
  2. ^ Predicted Daytime Coverage Area for WNAX 570 AM, Yankton, SD, radio-locator.com. Accessed December 28, 2015
  3. ^ Radio Service Bulletin, December 1, 1922, "New Stations" section, page 3.
  4. ^ Gurney Seed and Nursery Company, Victory Horticultural Library.
  5. ^ "WNAX Power Increase" (PDF). Broadcasting. February 15, 1933. Retrieved 7 October 2014. 
  6. ^ "Four Stations Get 5 kw." (PDF). Broadcasting. January 1, 1935. Retrieved 12 October 2014. 
  7. ^ http://www.hillbilly-music.com/programs/story/index.php?prog=540
  8. ^ http://www.woi-tv.com/Global/story.asp?S=7251278&nav=1LFX
  9. ^ https://www.fybush.com/site-011010.html
  10. ^ "SDPB, Yankton Stations Lauded". Yankton Press & Dakotan. 2006-05-08. 

External links[edit]

Coordinates: 42°54′47″N 97°18′58″W / 42.91306°N 97.31611°W / 42.91306; -97.31611