City Boston, Massachusetts
Broadcast area Greater Boston
Branding 100.7 WZLX
Slogan Boston's Classic Rock
Frequency 100.7 MHz (also on HD Radio)
First air date October 1948 (1948-10) (as WCOP-FM)[1]
Format Classic rock
HD2: Blues "Radio Mojo"
HD3: Adult Standards "The Lounge"
ERP 21,500 watts
HAAT 235 meters
Class B
Facility ID 13806
Transmitter coordinates 42°20′50.00″N 71°4′59.00″W / 42.3472222°N 71.0830556°W / 42.3472222; -71.0830556 (WZLX)
Former callsigns WCOP-FM (1948–1976)
WTTK (1976–1978)
WHUE-FM (1979–1984)
WCOZ (1984–1985)
WKKT (1985)
Owner CBS Radio
(CBS Radio Inc. of Boston)
Sister stations WBMX, WBZ, WBZ-FM, WBZ-TV, WODS, WSBK-TV
Webcast Listen Live
HD2: Listen Live
HD3: Listen Live
Website 100.7 WZLX

WZLX (100.7 FM, Boston) is a classic rock radio station in the Boston, Massachusetts market. WZLX was one of the first classic rock FM stations in America. Its studios are located in Brighton district of Boston, and its transmitter is located on top of the Prudential Tower.

CBS Boston studios, home of WZLX as of 2011


What is now WZLX was originally WCOP-FM, notable for being one of the first FM stations to break simulcasting with its AM partner. WCOP-FM's separate programming was initially classical music and was one of the first FM stations in the region to (briefly) broadcast in FM stereo (the station would resume stereo programming in the early 1970s).

In 1965, WCOP (AM) had become Boston's affiliate for the NBC Radio Network, and WCOP-FM would often simulcast the hourly NBC Radio newscasts. By 1969, NBC Radio's weekend series Monitor had moved from WCOP to WCOP-FM, to allow the former to broadcast more hours of country music on the weekends.

The station went through a number of format changes (and later callsign changes), including beautiful music in the late 60s until 1973, oldies (as “Total Gold 101, WCOP-FM”, 1973–74), country 1974–76), AOR (as WTTK "TK101" 1976–78), beautiful music (as WHUE, 1979–85), and Top 40 (as WKKT "The Cat", for a few months in 1985). Also, just before the switch to WKKT in December 1984, the station (as beautiful music station WHUE) sought and received the WCOZ call letters formerly on 94.5. Ironically, those calls belonged (legally) to the 100.7 frequency for just 2 weeks in December 1984.

100.7 FM adopted its current format and callsign, WZLX, in mid-September 1985. The station owners at that time, First Media Corporation, hired Bill Smith, first program director and morning drive host, to design and implement a format aimed at people who experienced adolescence in either the 1960s and 1970s and enjoyed the music of those eras, but did not care for the then-current heavy metal or top 40 'hot hits' of the 1980s. These were people whose mindset was getting too old for AOR and top 40 radio formats, but were too young for or not interested in the oldies radio format. WZLX is considered one of classic rock radio format's earliest success stories as reflected by the station's 19th to 2nd place climb in the Adults 25-54 demographic in its first ratings period. Barry Scott and The Lost 45s retro radio show was a Sunday night staple (he was also the Marketing & Promotions Director there from its inception until 1992).

A series of ownership changes made WZLX a part of Cook-Inlet Radio, then Infinity Broadcasting in late 1992. Currently, it is owned and operated by CBS Radio.

In 1997, WZLX radio host George Taylor Morris created a media frenzy about the "Dark Side of the Rainbow" phenomenon, in which Pink Floyd's album The Dark Side of the Moon is said to synch up with the movie The Wizard of Oz.[2]

In 2005, WZLX, along with sister stations Mix 98.5 and what was then Oldies 103.3, were rumored to flip to CBS Radio's ever-expanding "Jack FM" format. Had WQSX (now WEEI-FM) not flipped to the format as "93.7 Mike FM" on April 14, WZLX might have flipped to the format the next day as 100.7 Jack FM.

In the spring of 2007, WZLX became the first station in the country to broadcast programming in full digital 5.1 surround sound. This flagship effort coincides with the recent move of the industry to implement the HD Radio format.

From 1991 to 2007, the station had its studios on the 24th floor of the Prudential Tower in downtown Boston, the location of its transmitter. On March 3, 2007, the station moved crosstown to the facility where sister stations WODS and WBCN are clustered in the CBS studios in Brighton. The transmitter is still atop the Prudential Tower.


There have been a few morning shows on the station in recent history. With the coming of Howard Stern to WBCN in the early '90s, the Boston legend Charles Laquidara and his show, The Big Mattress, took up residence at 'ZLX. With Charles's retirement, the short-lived Mornings with Tai and Steve Sweeney eventually gave way to Steve Sweeney's Neighborhood, (co-hosted by Lance Norris) which ended a 5-year run in 2005. Long time morning team Karlson and McKenzie took over on August 1, 2005.

Sports conflict broadcasts

Beginning in October 2013, WZLX will also carry Boston Celtics games that conflict with Boston Bruins games. Games will be produced by sister station WBZ-FM (which is the flagship for both teams).[3] In addition, some Bruins games conflicting with WBZ-FM's New England Patriots broadcasts have aired on WZLX since 2011 (previously, WBZ served this function).


WZLX airs an all-blues format on its HD2 subchannel called "Radio Mojo".


WZLX previously aired a freeform rock format on its HD3 subchannel called WBCN which continued the name of the former Boston AOR station. On January 29, 2016, WZLX-HD3 switched to an adult standards format as "The Lounge".

Notable on-air staff


  1. Broadcasting Yearbook 1949 (PDF). 1949. p. 306. Retrieved January 16, 2012.
  2. Holley, Joe (August 3, 2009). "George Taylor Morris, 62: Radio Host Played Classic Rock". The Washington Post'. Retrieved August 10, 2009.
  3. Finn, Chad (September 26, 2013). "It's official: Celtics heading to The Sports Hub". Boston.com. Retrieved September 28, 2013.
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