➦In 1924...WLS-AM, Chicago signed-on.
After buying time on radio stations in the early days of broadcasting, Sears Roebuck & Co. in Chicago decided to start its own station. Its first test broadcasts used the call sign WBBX and then WES (“World’s Economy Store”). On April 12, 1924, the station became WLS (“World’s Largest Store”).
In its first month, WLS started its “National Barn Dance” program, a live country-music showcase that was the direct predecessor of the Grand Ole Opry.
A Chicago radio manufacturer signed on WENR Radio in 1925. The station entered a time-sharing agreement with WBCN Radio. An investor bought both stations in 1927. He later sold the licenses to NBC. The network kept WENR on the air. It shared a frequency with WLS for decades. One station would sign off and another would sign on.
Sears sold WLS to the “Prairie Farmer” magazine in 1928. The radio station became an essential part of agriculture in the Midwest. Farmers relied heavily on agricultural news, commodity prices and weather reports from WLS.
WENR-WLS boosted power to 50,000 watts in 1932, beaming its programming over much of the nation. Despite its part-time status, the station built a large amount of goodwill and a huge audience.
In addition to farm programming, WLS offered entertainment and educational programs. It also made history in news broadcasting. WLS reporter Herb Morrison famously said, “Oh the humanity!” as he watched the 1937 Hindenberg crash in Lakehurst, N.J. The recorded account aired the next day over NBC.
The station also experimented successfully in many forms of news broadcasting, including weather and crop reports. Its most famous news broadcast was the report of the Hindenburg disaster by Herbert Morrison.
VISIT SCOTT CHILDERS' WLS TRIBUTE WEBSITE: Click Here
VISIT JEFF ROTEMAN'S WLS TRIBUTE WEBSITE: Click Here
For about 15 years WLS shared it's frequency with WENR as part of the NBC Blue Network. In 1941 WLS changed frequency from 870 to 890 kilocycles with 50 kw of power. The transmitter site was in Chicago's south suburb of Crete, Illinois from 1924 to 1938. In 1938, they moved to it's current location in Tinley Park.
WLS was an NBC Blue Network affiliate during radio’s golden age. NBC was forced to sell the Blue Network, which became ABC. In 1954, ABC bought a controlling interest in WENR-WLS, combining the two into WLS. The network bought WLS outright in 1959.
The ABC era brought a major change. The staid, conservative WLS that brought Midwesterners a steady diet of farm reports, news and weather, general-interest music and entertainment and the “National Barn Dance” became a Top 40 station at 6 a.m. on May 2, 1960. ABC created one of the nation’s most influential radio stations in the rock era, attracting millions of listeners each week.
Here’s a sample of a 1962 aircheck featuring Dick Biondi:
By the late 1980s, it was an adult contemporary station during the day and offered talk programming at night. WLS switched to its current full-time news/talk format in 1989. Cumulus Media now owns the station.


















