|City of license||Halifax Regional Municipality, Nova Scotia|
|Slogan||Today's best music!|
|Frequency||100.1 MHz (FM)|
|First air date||November 1, 1977|
|Format||Hot adult contemporary|
|Callsign meaning||C IOO (One hundred)|
(Bell Media Radio)
|Sister stations||CJCH-FM, CJCH-DT|
CIOO-FM is a Canadian radio station, broadcasting at 100.1 FM in Halifax, Nova Scotia. The station uses the on-air brand name C100. It was owned by Toronto based CHUM Limited until that company's buy-out by CTVglobemedia in 2007, and then Bell Media in 2011.
In 1976, Radio 920, Ltd., a division of CHUM Limited, applied to the Canadian Radio-television and Telecommunications Commission for a new FM radio station broadcasting at 100,000 watts with a dial position of 100.1 MHz. This would be the third FM radio station in Halifax after FM stations CBC Stereo (CBH-FM) and CHFX-FM. Radio 920, Ltd. also owned CTV affiliate CJCH-TV and CJCH. The CRTC subsequently approved the application.
On November 1, 1977, C100 began broadcasting as an easy listening station (elevator music). As a new decade approached, C100 changed its programming format to album rock. This gave the listeners an opportunity to hear more than just the top 40 hits from a particular artist, such as other songs not yet on AM radio. In 1983, CHUM Limited tested a simulcast project. A new TV station, ASN, had aired in the province. Together with C100, they would air "Atlantic Canada's Choice" - a radio/TV program, hosted by Geoff Banks, counting down the week's best albums from 20 to 1. This lasted until spring 1985, where the station again reformatted its programming.
The spring of 1985 saw the station take on another programming angle, Top 40 along with oldies, such as the Beach Boys among others. This format was phased out not long after, when the station moved towards AC. The station ran such slogans as "Lite Rock...Less Talk", "Great Light Rock Hits" and "...Even More Lite Rock Hits". CIOO moved back to CHR (without the oldies lean) around 1993. This lasted until 2003, when CIEZ-FM (now CKUL-FM) dropped adult contemporary and CIOO-FM shifted to Hot AC. Like most Hot AC stations in Canada, C100 leans rhythmic, though not as heavy as sister station CHUM-FM/Toronto.
- The Breakfast Club is the weekday morning program on C100. The show airs from 5:30am – 10:00am, having extended from its old hours of 6:00am–9:00am. It was originally hosted by Kelly Latremouille, Peter Harrison and Moya Farrell until mid-2007. Kelly had first debuted with the station in the summer of 1993, replacing John Biggs, who took Kelly's position with 92 CJCH AM at that time. After Kelly Latremouille's departure in late June 2007, Adam Marriott became an interim host along with Peter and Moya. On August 17, 2008, Brad Dryden joined the Breaskfast Club as Kelly's replacement.
Long before the Breakfast Club, the station used a one DJ personality. Geoff Banks hosted the morning show for the better part of the 1980s, before John Biggs took over and shortly thereafter forming the show they have today.
- The Top 9 at 9 is a countdown of the day's most requested songs. It is heard each weekday morning and weeknight at 9 o'clock. When this show first aired in 1993, it was the Top 7 at 7.
- Retro Request Sunday with Nicolle, heard every Sunday morning from 8am to noon, focuses on music from the 1980s. When the 80's boom started its resurgence in 1995, C100 ran the program from 8:00am–10:00am on Saturday mornings. This time slot lasted for around 8 years, with the format sometimes running from 8:00 till noon.
- The Atlantic Canada Countdown with Matt & Deb is C100's weekly countdown of the most popular music of the week in Atlantic Canada. It is heard Sunday mornings from 8 to 10 AM.
C100 formerly broadcast the radio version of the MuchMoreMusic countdown, but stopped airing it sometime in 2007.
- The C100 Summer Cruiser is a mobile prize machine team who broadcast their secret location around the Halifax Regional Municipality multiple times throughout the day all summer. Prizes vary every summer but in the past have included free concert tickets, movie passes, museum passes, gift certificates, C100 'gear' and a chance to fill out a ballot to win a weekly prize or 1 grand prize. A recent addition to the prize rotation are C100 window stickers. Although no official contest regarding the stickers has been announced, there is growing speculation that it will be something quite worthwhile.
On air staff
- Brad Dryden The Breakfast Club
- Peter Harrison The Breakfast Club
- Moya Farrell The Breakfast Club
- Zach Bedford-Weekdays 10:00AM - 3:00PM
- Jax-Weekdays 3:00PM - 8:00PM
- Jillian Saturday/Sunday 9a-3p
- CIOO history at Canadian Communications Foundation
- Query the REC's Canadian station database for CIOO-FM