WDAY's power is 10,000 watts, and its transmitter site has three towers. Two towers are used for the daytime directional antenna, and all three at night, in order to protect other stations on 970 kHz from interference. WDAY's daytime signal covers the eastern half of North Dakota, west central Minnesota, northeastern South Dakota, and southern Manitoba.[3]
Effective December 1, 1921, the Department of Commerce, which regulated radio at this time, adopted regulations setting aside two wavelengths for use by broadcasting stations: 360 meters (833 kHz) for "entertainment" programs, and 485 meters (619 kHz) for "market and weather" reports.[4] On May 23, 1922, WDAY's first license, as North Dakota's first radio station, was issued to Kenneth M. Hance at 117 Broadway in Fargo for operation on both wavelengths,[5] although station publicity has traditionally reported that broadcasting began on the previous day.[1]
The WDAY call sign was randomly assigned from a sequential list of available call letters. Currently most stations west of the Mississippi River have call letters beginning with "K". However, WDAY was licensed before the government changed the dividing line between W and K call signs. Prior to the January 1923 establishment of the Mississippi River as the boundary, call letters beginning with "W" were generally assigned to stations east of an irregular line formed by the western state borders from North Dakota south to Texas, with calls beginning with "K" going only to stations in states west of that line.[6]
In July, WDAY's schedule on 360 meters was reported to be musical programs on Monday, Wednesday and Friday plus baseball scores and general news daily at 7:30 p.m. except Sunday, and, on 485 meters, weather reports daily at 7:30 p.m., both by voice and by Morse Code.[7] In 1923 ownership was changed to Fargo Radio Service (Kenneth N. Hance),[8] which later became the Radio Equipment Corporation.[9]
WDAY celebrated its 50th anniversary on May 22, 1972.[10]
On November 11, 1928, under the provisions of the Federal Radio Commission's General Order 40, WDAY was assigned to 1280 kHz on a timeshare basis with WEBC, then in Superior, Wisconsin.[11] The next year WDAY moved to 940 kHz, now with unlimited hours of operation.[12] On January 8, 1935, the U.S. Federal Communications Commission (FCC) approved increasing WDAY's power to 5,000 watts.[13] The Fargo Forum newspaper obtained a minority interest in the station in 1935,[14] and gained controlling interest of WDAY and WDAY-TV in 1960.[15] On March 29, 1941, stations on 940 kHz moved to 970 kHz, with the implementation of the North American Regional Broadcasting Agreement.[16]
On May 30, 2011, a severe thunderstorm badly damaged WDAY's radio towers located on Main Avenue in West Fargo, North Dakota, knocking the station off the air. Of the three towers, one completely collapsed, a second snapped approximately two-thirds of the way up, and the third remained standing but severely mangled. WDAY was able to get back on the air several days later using the remaining tower, with the full 5,000 watt non-directional signal during the day, but only 1,200 watts at night, as the two towers which were lost were used for the directional 5,000 watt nighttime signal. The FCC granted WDAY a construction permit to make it a 10,000 watt full-time signal from a new transmitter, which began broadcasting at full power in March 2013.[17]
An FM translator at 93.1 FM signed on the air Thursday, July 20, 2017.[18]
In 2020, Forum Communications Company entered into a local marketing agreement with Bakken Beacon Media, giving Flag Family Media full programming control of AM 970 and 93.1 FM.[19]
^"New Stations", Radio Service Bulletin, June 1, 1922, page 2. Three month license, Limited Commercial, Serial # 418, issued May 23, 1922 to Kenneth M. Hance, Fargo, North Dakota, for operation on 360 and 485 meters.