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|City of license||Pittsburgh, Pennsylvania|
|Broadcast area||Pittsburgh, Pennsylvania|
|Branding||105.9 The X|
105.9-2 for Penguins Radio
|First air date||1948 (as WAMO-FM)|
|Former callsigns||WAMO-FM (1948-1996)|
|Owner||Clear Channel Communications|
|Sister stations||WBGG, WDVE, WKST-FM, WPGB, WWSW|
WXDX-FM — branded 105.9 The X — is a modern rock radio station based in Pittsburgh, Pennsylvania. Owned by Clear Channel Communications, the station broadcasts at 105.9 MHz with an effective radiated power (ERP) of 15.5 kW.
This station actually first signed on at this frequency as WAMO-FM, the sister station of WAMO in Pittsburgh. For much of its existence, this station operated as an urban contemporary formatted station with its own independent programming and occasional simulcast of its AM sister.
The station first became what it is today in 1994, when it was then known as "The Force", and operated at 106.7. The Force touted itself with the motto "The Best of Rock". The station flipped to modern rock in 1995. In 1996, Clear Channel, the owner of the Force, paid Sheridan Broadcasting to swap signals with WAMO-FM, giving it better signal coverage. It was also one of six stations in the Clear Channel roster that dropped Howard Stern in February 2004 (however, Stern would show up on WRKZ later that year). Howard began airing on WXDX in November 1995.
On-air staff 
- Tim Benz: Monday-Friday, 6am-10am
- Bob McLaughlin: Monday-Friday 6am - 10am
- Whipping Boy: Monday-Friday 10am - 3pm, Sun 7:30 am-11 am (Pre-historic X)
- Mark Madden: Monday-Friday 3pm-6pm (sports talk, 3pm-6:30 pm on Penguins gamedays)
- Abby Krizner: Monday-Friday 6pm-10pm
- Digby: various
- Lenny: Sundays 8 pm - midnight (Edge of the X)
Former on-air staff 
- Alan Cox - The Alan Cox Radio Show. Alan Cox generated a sizable following after being hired to host afternoons in 1999. He replaced "The Howard Stern Show" in the morning in June 2004 and his contract was not renewed for financial reasons in 2006. Cox hosted The Morning Fix at WKQX (Q101)/Chicago from August 2006 until August 2008. Currently, he is the afternoon drive host from 3 PM - 7 PM at 100.7 WMMS in Cleveland, OH. Cox released three CDs while on the air at WXDX-FM Pittsburgh: "Alan Cox Sells Out", "Ribbed", and "Shadyside Bathroom Wall Blues". He frequently performed at numerous comedy clubs throughout the area, and a portion of the proceeds from his CDs were donated to local charities.
- Tim Anglin - He was a part-time dj and The X's Promotions Director (1998–2002)
- Cramer - (Paul Cramer) - Was a weekend and swing shift jock on The X who came to the station from rival alternative WNRQ (The Revolution) and was one of the original "XX" DJ's from the 1980s Pittsburgh alternative station WXXP. He is the author of "The Encyclopedia of Modern Rock Artists". An internet radio pioneer, Cramer created one of the first alternative rock internet stations (EAR.FM) in 1997.
- Debbie "Buck" Wilde - Night jock from 1996 to 2002, now working outside of the industry.
- Ditch - Evening jock until 1997, now at KUFO in San Diego, CA.
- Ali Castellini (aka Ali Gheny) - Afternoon jock and Assistant Program Director from 1995–97 at "WNRQ- the Revolution". Known for antics such as giving away "Oceanfront condominiums in Idaho" on April Fools day, she was later recruited to be Program Director and Afternoon Jock at WXDX after the Viacom-Secret Comm-EnterComm buy outs. It was this era that WXDX saw its greatest evolution and its on-air staff its greatest growth. In 1997 she moved to Philadelphia to start up and host afternoons for Modern AC-"Max 95.7" WXXM. There she simultaneously hosted the nationally syndicated show "Today's Women" as a "Lilith Fair" radio companion for United Station Radio Networks (a Dick Clark company). Later she directed and oversaw CDNow.com's first forrays into online radio products and stations, which included the company purchase of Napster.com. She later returned to "terrestrial" radio at Adult Alternative WXPN in Philadelphia where she hosted evenings on-air while associate producing syndicated "World Cafe". She also managed the digital relationship the program had with Sirius Satellite Radio and booked all of the artists. After 25 years in Radio and music, she now continues work starting up companies in other industries.
- Grimm - Afternoon and evening jock. Moved to Monday-Friday 3–7 pm slot when Alan Cox's show was moved to the mornings in 2004 and stayed in this time slot until August 2008. Worked with Pittsburgh Penguins Radio on 105.9 HD2 as producer/co-host of "Penguins Live." (daily 9:00–11:30 am with Pittsburgh native Steve Mears hosting). Also worked doing weekends at 93.7 The Fan and now is on-air at 100.7 Star.
- Max Logan (aka Maxwell) - Real name Benjamin Bornstein. Afternoon jock until 1997. Formerly heard on WMMS (and later WNCX) in Cleveland as host of The Maxwell Show. Ironically, Alan Cox took over the afternoon drive shifts previously occupied by Max at both WXDX-FM in 1999 and at WMMS in Cleveland in 2009.
- Ravey - overnights, weekends, swing jock, also a former jock at WNRQ (The Revolution).
- Mike Bocan - Former 7 pm – midnight weeknight, weekend jock, and promotions director who worked until March 12, 2007, after an incident transpired during a phone call to Bob Grove, host of the Pittsburgh Penguins postgame show.
- Lenny (Diana)- was the X's music director and host of Edge of the X from 2001–2008; also did the 7 pm – midnight shift weeknights during his last couple of years with the station. Now is a Program Director of an alternative rock station in PA.
- Steve Stone (station promotional voice), a nationally known television and radio promo announcer. Steve Stone worked as the in-house creative director for WXDX-FM for three years, from 1996 to the end of 1999. He went on to work at WXRK-FM in New York City, and eventually launched his own voiceover and audio production company.
- Megan Slater - did weekends and filled in on the weekdays; left the X in early 2008 to join WRKZ-FM, a rock station in Columbus, Ohio where she was the weekday mid-day host. She moved to Q-FM 96 (WLVQ-FM) in Columbus, Ohio where she was the weekday mid-day host until May 3, 2010.
WXDX HD2 
In May 2009, as part of WXDX's renewal of Pittsburgh Penguins radio rights, WXDX and the Penguins announced that the HD2 subchannel would become a 24-hour channel devoted to Penguins coverage, billed as "Pittsburgh Penguins Radio." Plans for the channel (which launched October 1, 2009) include local and nationally-originated Penguins and hockey coverage (including "NHL Live" and league commissioner Gary Bettman’s weekly “NHL Hour"), rebroadcasts of classic Penguins games, and game broadcasts of the team's top farm club in Wilkes-Barre/Scranton. The move will make the Penguins the second North American professional sports team (the first NHL team) with their own terrestrial radio channel (after the NFL's Dallas Cowboys and their HD2 relationship with KRLD-FM).
Pittsburgh Penguins Radio on 105.9 HD2 Daily Schedule 
- 9:00 am – 12 noon: "Penguins Live", a three-hour show featuring Penguins news, interviews, and highlights. This show was formerly hosted by Steve Mears.
- Noon - 1 pm: Dan Bylsma Daily Press Conference / Locker Room Sound
- Noon – 2 pm: "NHL Live" - simulcast from New York City (Friday only)
- 2 pm – 3 pm: The X's Mark Madden will provide exclusive Penguins and NHL-themed content.
- 9:00am-10:00am: Pensweek, a one-audio audio magazine
- "WAMO and X Play Hide-and-Seek with Listeners Today". Pittsburgh Post-Gazette (John Robinson Block). April 10, 1996. "WXDX is shepherding in this new stage of growth with a revamped on-air lineup, bringing Max Logan over from WDVE to host afternoon drive..."
- Taylor, Tom (May 11, 2009). "The NHL Pittsburgh Penguins get a full-time HD-2 channel from "The X."". Taylor on Radio-Info. Radio-Info.com.
- Official website
- Query the FCC's FM station database for WXDX
- Radio-Locator information on WXDX
- Query Arbitron's FM station database for WXDX