1959
CKGM began operations December 7. It broadcast on a frequency of 980 kHz and had a power of 10,000 watts day and night. The station operated with a single directional pattern, using six towers at a site located on lots 109A and 109B, Concession of St. George, Parish of St. Constant, District of La Prairie. Studios and offices were located at 1455 Drummond Street. CKGM (the "GM" for Greater Montreal) was owned by Maisonneuve Broadcasting Co. Ltd. (Geoffrey W. Stirling, C. Charbonneau and Nicole Wanner).

CKGM's original announcer line-up: Dan Tyler (mornings), Bob Washington (middays), Doc Stone (middays), Bob Washington (middays), Ray Stevens (afternoons), Steve Emery (evenings). George Davies was program director.

1960
Geoff Stirling (CKGM’s owner) applied for a television licence for Montreal. He and his partners (including Don Jamieson) lost out to Canadian Marconi (CFCF-TV).

1961
Bob Crabb was in CKGM's news department. He covered the Bay of Pigs invasion of Cuba for the station.

1963
The on-air team included Charlie The Morning Mayor and Jim Turner.

CKGM-FM signed on.

1964
Announcer line-up: Doug Burrows (6:00-10:30), Dick Varney (10:30-2:30), John Murphy (2:30-6:00), Bob Gillies (6:00-9:00), George Morris (9:00-12:00), Gord Logan (12:00-6:00).

On December 11, an application to transfer 1,000 common and 8,930 preferred shares of Maisonneauve Broadcasting Corp. Ltd. from Geoffrey W. Stirling to CHUM Limited was denied.

1971
Lee Murphy was evening announcer.

1972
Maisonneauve Broadcasting was given approval to move studios and offices to 1355 Greene Ave.

Ralph Lockwood was morning man. Darrell Provost was a Weekend announcer.

1973
In addition to Lockwood, Mark Edwards, and Dan O'Neil were also on-air at CKGM.

1974
CKGM had plans to use two directional patterns rather than one, from the existing six towers.

On the air: Ralph Lockwood (6-9), Mike Williams (9-12), Randy Dewell (12-3), Donny Burns (3-6), Steve Shannon (6-10), William B. Bell (10-1, aka Gary Bell), Marc Denis (1-6, joined the station this year). Weekend announcers: Greg Stewart, Chuck Morgan, Dan O'Neill. News: Lee Marshall, Ginger Jones, Brian Stone, Gerry Dixon, Alain Montpetit, Jim Bay (Sports).

1975
On March 6, CKGM was authorized to change its daytime radiation pattern in order to improve its signal to the northeast, southeast and southwest sectors of Montreal.

1976
CKGM had its licence renewed but its request to use some French was denied. The station was also told to increase spoken word programming.

Line-up: Ralph Lockwood (6-9), Mike Williams (9-12), Randy Dewell (12-3), Donny Burns (3-6), Rob Christie (6-10), Marc Denis (10-1), Scott Carpentier (1-6). Lynn Desjardins was also on the air at CKGM.

1977
On the air: 6:00 - Ralph Lockwood, 10:00 - R. G. Hall, 1:00 - Rob Christie, 4:00 - Mike Cooper, 8:00 - Marc Denis, 12:00 - Scott O'Brien. Weekends - Greg Stewart, Bobby Day, Terry McPhail. Dave Williams joined CKGM this year.

1978
Line-up: 6:00 - Ralph Lockwood, 10:00 - Rob Christie, 2:00 - Robert G., 6:00 - Marc Denis, 10:00 - Gary Bell, 2:00 - Chris Michaels. Weekends - Greg Stewart, Dave Williams, Scott O'Brien.

1982
John Mackey left as general manager of CKGM and CHOM. He was replaced by former sales manager Phil Parker. Mackey moved to CJBK in London. Jim Welcher, formerly general sales manager at CJMS/CKMF-FM became local and regional sales manager for CKGM.

Ralph Lockwood (mornings) left. Michael Dee Graham (middays) left in May.

1983
CKGM received approval to move from 980 kHz to 990 kHz, increase full-time power from 10,000 watts to 50,000 watts, and move the antenna site from Sainte Philomene de Chateauguay (Mercier) to Ste. Martine.

1984
The authority for CKGM to move from 980 kHz to 990 kHz, increase power, and move the antenna site, was voided by the CRTC because the station failed to submit the appropriate technical documentation.

CKGM's FM station - CHOM - moved to the CKGM building at 1310 Greene Avenue, third floor.

1985
On August 20, CHUM Limited purchased Maisonneauve Broadcasting (CKGM & CHOM-FM) from Geoff Stirling's Apache Communications.

Lee Hambleton

Following CHUM's purchase of CKGM/ CHOM-FM (and CKWW/CJOM Windsor), Lee Hambleton was named vice president and general manager of CHUM Quebec. He had been with the Montreal stations for 17 years.

Ralph Lockwood returned to CKGM as morning man. He had been with the station for most of the 1970's, then went to TV where he became the voice of the Montreal Concordes football team.

1985-86
David Wolfe was named program director. He returned to CKGM after working for CHUM stations CJCH-AM and ATV Halifax, and MuchMusic in Toronto.

1986
On January 15, CKGM switched from Top 40 to Adult Contemporary (Lite Rock, Less Talk, Favourites of Yesterday and Today).

Steve Anthony left CKGM for Toronto's CILQ-FM.

1987
Bill Roberts was news director. Mary Ann Carpentier did traffic. Ralph Lockwood left CKGM where he had been morning man.

1988
David Wolfe left as CKGM's program director to become marketing director for a San Diego based firm. He was succeeded at CKGM by Susan Davies who had been CJFM-FM's program director.

Karen Bryant was director of promotions.

Steve Kowch took over as news director of CKGM/CHOM. He replaced Bill Roberts who left the job for health reasons.

1986-88: in addition to doing traffic, Mary Anne (Carpentier/Pervin/Lisney) was also a morning show feature personality and the feature entertainment editor. She had also been at CKGM in 1973, working with Ralph Lockwood. When Mary Anne left CKGM, she headed to CHUM in Toronto.

1989
On February 10, oldies formatted CKGM became CHTX "980 Hits" with a contemporary hits format.

Announcers included The James Gang (AM Drive) and Paul Bouchet (evenings).

1990
On February 5, CHTX received CRTC approval to increase full-time power from 10,000 watts to 50,000 watts, move from 980 kHz to 990 kHz, and to relocate the transmitter site. The changes would improve the station's signal quality in Montreal and increase the overall coverage area.

In July, CKGM installed its new Nautel Ampfet 50,000 watt transmitter. Other equipment supplied for the new transmitter site in Ville Mercier, included a Kintronic DL-50 dummy load and Potomac 7 tower antenna monitor (with two patterns). Operations manager Joanne Rudy reported conversion to (Motorola) stereo was by adding an Orban stereo upgrade unit to the Optimod AM, and an Orban Co-operator unit at the studios. CKGM was now boasting the slogan "50,000 watts on 990 in 1990".

Mark Hollywood was evening announcer.

1991
On May 24, at 6 a.m., CHTX returned to an Oldies format as CKIS "Oldies 990".

1996
Former CKGM president and general manager Don Wall died at the age of 69 on January 13. He left the station in 1970 for CJOR in Vancouver. Failing health forced him to retire in 1979.

On January 15, CKIS returned to the CKGM calls and the format changed to talk (Talk Radio with Attitude).

1998
For much of the first half of 1998, CKGM turned its 990 frequency over to CJAD 800. CJAD had lost its towers in a major ice storm. On June 12, at noon, CKGM returned to the air (on 990) with a new (or old) format: oldies. CJAD had returned to 800 kHz on May 29 and simulcast on both frequencies until June 12.

CKGM was given approval to operate a transitional digital radio undertaking from a transmitter on Mont Royal, using the EUREKA-147 digital audio broadcasting system. The transmitter would operate on 1452,816 MHz with an effective isotropic radiated power of 11,724 watts.

Marc Chambers was evening announcer.

2001
Announcers (before all sports): 6:00 Andy K., 9:00 Charlie O'Brien, 2:00 Gord James, 7:00 Marc Chambers (to midnight).

On May 7, CKGM Oldies 990 switched to an all-sports format as part of CHUM Limited's "The Team" sports network. The station became known as The Team 990.

On May 9, Ted Blackman and Mitch Melnick began hosting Team 990's morning show.

2002
Standard Radio Inc. took ownership of CHOM-FM.
    
On August 27, the Team network folded but CKGM continued to operate with the sports format.

Former CKGM personality Ted Blackman died October 1, 2002. He was 60.

2005
Former CKGM general manager Lee Hambleton died in January.

Allan Waters, the founder of CHUM Limited, owner of CKGM,  passed away at the age of 84, on December 3rd.

2006
On July 12 it was announced that Bell Globemedia would pay C$1.7 billion for CHUM Ltd., in a deal that would see the company become part of the BCE-owned media conglomerate, subject to CRTC approval.  On August 31, the two companies announced that BGM had been successful in its offer to acquire approximately 6.7 million common shares and approximately 19.2 million non-voting Class B shares of CHUM.  The shares were to be placed in the hands of an independent trustee pursuant to a voting trust agreement approved by the CRTC.

On December 12^th, it was announced that Bell Globemedia would henceforth be known as CTVglobemedia.

2007
A CRTC hearing on the CTVglobemedia application to acquire the assets of CHUM Limited was held on April 30^th 2007.  On June 8 the CRTC approved the acquisition of CHUM Ltd. by CTVglobemedia, on condition that CTV sell off its five City-TV stations, CITY-TV Toronto, CHMI-TV Portage La Prairie/Winnipeg, CKEM-TV Edmonton, CKAL-TV Calgary and CKVU-TV Vancouver.   Rogers Communications announced on June 25^th that a deal had been reached for them to buy these stations from CTV, subject to CRTC approval. Among the CHUM assets acquired by CTVglobemedia in the deal were seven television stations, 21 specialty channels and some 33 radio stations, including CKGM-AM.  

2009
On August 28, the CRTC renewed the transitional digital radio licence of CKGM-DR-2.

                                              Written by Bill Dulmage - Updated June, 2010