Article · Wikipedia archive · Last revised Jul 10, 2026

CISO-FM

CISO-FM is a Canadian radio station, which broadcasts a modern rock format at 89.1 MHz in Orillia, Ontario. The station is branded as 89.1 Max FM.

Last revised
Jul 10, 2026
Read time
≈ 1 min
Length
222 w
Citations
3
Source
CISO-FM
Broadcast area
Simcoe County
Frequency89.1 MHz
Branding89.1 Max FM
Programming
LanguageEnglish
FormatModern rock
Ownership
OwnerBayshore Broadcasting
CHGB-FM
History
First air date
2011
Call sign meaning
Sunshine Orillia (former branding)
Technical information
ClassA
ERP2.5 kW
HAAT154.1 metres (506 ft)
Links
WebcastListen Live
Website891maxfm.ca

CISO-FM is a Canadian radio station, which broadcasts a modern rock format at 89.1 MHz in Orillia, Ontario. The station is branded as 89.1 Max FM.1

History

Owned by Bayshore Broadcasting, the station received CRTC approval on June 1, 2009.23

The station officially launched in February 2011 with an adult contemporary format branded as Sunshine 89.1.

On November 1, 2018, CISO-FM rebranded to 89.1 Max FM with a classic hits format playing the best of the 70's, 80's and 90's.

On May 17, 2019, the station changed its format to modern rock but retained its "Max FM" branding.

References

References

  1. The CRTC has completed its review of more than a dozen applications for new FM signals in Ontario's "Cottage Country". Scott Fybush/North East Radio Watch, June 8, 2009
  2. Government of Canada, Canadian Radio-television and Telecommunications Commission (CRTC) (June 1, 2009). "ARCHIVED - Licensing of new radio stations to serve Orillia, Ontario". crtc.gc.ca.
  3. "Licensee Name Search Results | Spectrum Direct | Industry Canada". Archived from the original on 2011-07-06. Retrieved 2009-07-05.
External links

44°33′15″N 79°33′21″W / 44.55417°N 79.55583°W / 44.55417; -79.55583