|Broadcast area||Oxford County
|Slogan||"The World's Best Music"|
|Frequency||104.7 MHz (FM) (also on HD Radio)|
|First air date||2004|
|Format||Analog/HD1: Adult contemporary
HD2: All-80's Hits
80s & More - CIHR-HD2
CIHR-FM is a Canadian radio station broadcasting at 104.7 FM in Woodstock, Ontario. The station plays an adult contemporary format branded as 104.7 Heart FM and is owned by Byrnes Communications Inc.
The station's signal reaches most (if not all) of the London-Woodstock-Tillsonburg area (as Nielsen BDS describe the station as a London, Ontario station), and under extreme conditions (such as fog), the signal reaches to just west of Chatham-Kent, Ontario before it begins to interfere with Toledo, Ohio's WIOT-FM, which is also on 104.7 FM. Since the flip of CIQM-FM from AC to hot AC in 2010, CIHR-FM, along with CHGK-FM in Stratford (which has since shifted to CHR as 107.7 2Day FM) are the only AC stations serving London. CIHR-FM has to provide protection to the East because of CHUM-FM, which broadcasts at 104.5 FM and has a higher power output.
On March 17, 2011, the station applied to change the authorized contours by increasing the average effective radiated power from 7,096 watts to 8,950 watts. All other technical parameters would remain unchanged. This application received CRTC approval on November 10, 2011. 
In 2015, CIHR-FM was the first station in the London-Woodstock radio market to upgrade to HD Radio operations, adding a second subchannel, titled "80s & More". However, for those without HD Radios, the new digital subchannel is also broadcast on their website.
- 104.7 Heart FM
- CIHR history - Canadian Communications Foundation
- Query the REC's Canadian station database for CIHR-FM
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