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WSDF

Louisville, Kentucky
Broadcast area	Louisville Metro Area / Kentuckiana
Frequency	100.5 MHz (HD Radio)
Branding	100.5 FM
Programming
Format	Adult hits
Subchannels	HD2: K-Love
Affiliations	Premiere Networks
Ownership
Owner	iHeartMedia (iHM Licenses, LLC)
Sister stations	WTFX-FM, WQMF, WAMZ, WNRW, WKRD, WHAS, WKJK
History
First air date	1993 (as WTFX)
Former call signs	WTFX (1991–2002) WTFX-FM (2002–2005) WLUE (2005–2009) WLGX (2009–2020)
Call sign meaning	SDF is the ICAO code for Louisville Muhammad Ali International Airport
Technical information
Licensing authority	FCC
Facility ID	53593
Class	C2
ERP	37,000 watts
HAAT	169 meters (554 ft)
Transmitter coordinates	38°11′32.00″N 85°31′17.00″W / 38.1922222°N 85.5213889°W / 38.1922222; -85.5213889
Translator(s)	HD2: 95.1 MHz W236AN (Louisville) HD2: 97.9 MHz W250BD (Louisville)
Links
Public license information	Public file LMS
Webcast	Listen Live
Website	100.5FM Louisville

WSDF (100.5 FM) is a radio station broadcasting an adult hits format under the branding "100.5 FM". Licensed to Louisville, Kentucky, United States, the station serves the Louisville area. The station is owned by iHeartMedia and features programming from iHeart subsidiary Premiere Networks. The station is also broadcast on HD radio. The station's studios are located in the Louisville enclave of Watterson Park and the transmitter site is in east Louisville, southwest of the I-64/I-265 interchange.

History

The station was assigned call letters WTFX on June 28, 1991. On April 19, 2002, the station changed its call sign to WTFX-FM, on August 19, 2005, to WLUE, and an application was filed as of September 3, 2009, to change the call sign to WLGX. On February 4, 2020, the call sign was changed to WSDF.

This station initially signed on with a classic rock format on June 11, 1993, which shifted more towards mainstream rock and then active rock by 2002, as 100.5 The Fox. On August 10, 2005, at noon, "The Fox" moved to 93.1, while 100.5 began stunting with a loop of the songs "Louie Louie" by The Kingsmen and "Brother Louie" by Stories. At 2 p.m., 100.5 flipped to variety hits as 100.5 Louie FM. The first song on Louie was "Piano Man" by Billy Joel.

On September 3, 2009, at 5 p.m., in response to slipping market share, the station shifted towards a 1990s pop/rock-centered offering called "100.5 Gen-X Radio". According to a press release which was issued hours before the format change, the station promised to feature music from "grunge, hip-hop, hair bands and boy bands".

Beginning in 2011, WLGX would temporarily drop their '90s Hits format beginning in November each year for a Christmas music format, branded as "Gen X-Mas", during the tenure of the 90s hits format. During these times, they maintained a separate stream of the regular "Gen X" format under the same name on iHeartRadio.

In April 2014, the station branding was modified and changed to "My 100.5 Gen-X Radio". At the same time, the 1980s and '90s music was greatly reduced, and the playlist was modified to include a Hot Adult Contemporary mix of music generally focused towards the 1990s through today. On July 1, 2014, at midnight, WLGX was officially rebranded as 100.5 MYfm.

On May 25, 2016, WLGX rebranded as "100.5 Kiss FM".

On November 27, 2019, WLGX dropped its hot adult contemporary format and began stunting with Christmas music; unlike other years the station had played Christmas music, the station had gone jockless with the flip, and had erased all references to "Kiss FM", rebranding as "Christmas 100.5". At midnight on December 30, the stunting shifted to a broad-spanning variety hits format branded as simply "100.5 FM", teasing that a new format was "under construction", and was set to be revealed in the near future.

On January 14, 2020, at 5 p.m., the variety hits format was confirmed as the permanent format, albeit with a slightly more narrowed approach consisting of '80s and '90s hits, not unlike the previous "Gen-X" format, branded as "100.5 FM - Your Life, on Shuffle". The first song under the new iteration of the format was "Bust a Move" by Young MC.

Previous logos

References

1. "Facility Technical Data for WSDF". Licensing and Management System. Federal Communications Commission.
2. "WSDF Facility Record". United States Federal Communications Commission, audio division.
3. "HD Radio Station Guide for Louisville". HD Radio. iBiquity. Archived from the original on 2016-10-29. Retrieved 2017-04-02.
4. "WSDF Call Sign History". United States Federal Communications Commission, audio division.
5. Tom Dorsey, "Ex-Louisvillian makes her Marx in filmmaking," The Courier-Journal, June 15, 1993.
6. "Street Talk" (PDF). p. 16. Retrieved 2023-09-17.
7. Tom Dorsey, "'Law & Order' and 'CSI' spawn imitators for the fall screen," The Courier-Journal, August 11, 2005.
8. "Louisville - 100.5 Louie FM - Variety Hits".
9. Gen X Growing Out Of Louisville
10. WLGX Louisville Relaunches as 100.5 Kiss FM Radioinsight - May 25, 2016
11. WLGX Drops Kiss FM For Christmas Radioinsight - November 27, 2019
12. 100.5 Louisville Goes Under Construction
13. "WLGX Brings Back Gen X Radio as 100.5 FM". 14 January 2020.

External links

• Facility details for Facility ID 53593 (WSDF) in the FCC Licensing and Management System
• WSDF in Nielsen Audio's FM station database

• HD Radio stations
• Radio stations in Louisville, Kentucky
• Radio stations established in 1995
• IHeartMedia radio stations
• 1995 establishments in Kentucky
• Adult hits radio stations in the United States