WTSL

In October 1950, WTSL first signed on.[3] It was owned by Granite State Broadcasters and was powered at only 250 watts, a network affiliate of the Mutual Broadcasting System. In 1961, the daytime power was increased to 1,000 watts. In the 1980s, the nighttime power was also boosted to 1,000 watts.

In June 1970, the station was acquired by Tri City Broadcasting from Knight Quality Stations. Sound Citizens Communications bought the station in 1974.[4] Up to this time, WTSL carried the NBC Radio Network news and music show Monitor, along with Boston Red Sox baseball, via an over-the-air feed from WGIR-FM in Manchester and WTSV-FM in Claremont. It aired a middle of the road music format. In the 1970s, WTSL dropped NBC, adding the CBS Radio Network and later, returning to the Mutual Broadcasting System as a secondary affiliation. This change would allow WTSL to switch from overnight music to Larry King's Mutual talk show.

After a period with Mutual, WTSL was asked to become its primary affiliate in the Lebanon–Hanover market, but turned it down. Mutual then moved to WNHV AM–FM in White River Junction, Vermont, and WTSL joined ABC; this allowed the station to add Paul Harvey, which had been on WNHV. During this period of time, the studios were located at its transmitter site on Oak Ridge Road in West Lebanon, New Hampshire. The studios were subsequently moved to downtown Lebanon mall along with sister station WTSL-FM (now WGXL). Several owners later, the station was purchased by Robert Frisch, owner of WXXK (originally on 101.7 FM; later moving to 100.5 with the purchase of that facility) By this period of time, WTSL was a talk radio station with a strong local news presentation, including major newscasts in drive time and at noon. Mountain View Broadcasting held onto WTSL, as well as WGXL, WXXK and WVRR (the old WXXK facility at 101.7) property until their sale to Clear Channel Communications (now iHeartMedia) in 2000. During the time, WTSL held onto the rights to Red Sox baseball (since then baseball has moved to sister station WWOD).

Logos used while simulcasting with WTSV

Clear Channel continued the talk radio format,[5] while adding Rush Limbaugh, taking the program from WNTK-FM. Rush stayed on WTSL until it was sold again in 2007 to Great Eastern Radio. Rush returned to WNTK, which had now began WUVR. Great Eastern flipped it to a sports radio format, simulcast with sister station 1230 WTSV in Claremont, using the ESPN Radio Network.

On June 12, 2018, WTSL dropped the ESPN sports format and began stunting with "Rapper's Delight" by the Sugarhill Gang, in preparation of launching new translator W248DA (97.5 FM).[6] (1230 WTSV continues with the sports format.) On June 21, 2018, the stunting ended, with WTSL and W248DA changing format to classic hip hop, branded as "Hot 97.5."[7]

On July 29, 2022, WTSL dropped the classic hip hop format and flipped to adult hits, branded as "97.5 & 101.7 The Penguin"; with this format change, the station began simulcasting on the second HD subchannel of WHDQ (the former WTSV-FM), along with a Claremont translator, W269DI (101.7 FM).

• WTSL in the FCC AM station database
• WTSL on Radio-Locator
• WTSL in Nielsen Audio's AM station database
• W248DA in the FCC FM station database
• W248DA on Radio-Locator
• W269DI in the FCC FM station database
• W269DI on Radio-Locator