| Frequency | 103.9 MHz |
|---|---|
| Branding | 103.9 The Zone |
| Programming | |
| Format | Active rock |
| Ownership | |
| Owner |
|
| History | |
First air date | September 10, 1973 |
Former frequencies | 91.5 MHz (1973–1995) 106.9 MHz (1995–2003) 107.1 MHz (2003–2011) |
Call sign meaning | K Montana School of Mines |
| Technical information[1] | |
Licensing authority | FCC |
| Facility ID | 3042 |
| Class | A |
| ERP | 185 watts |
| HAAT | −68 meters |
Transmitter coordinates | 46°00′23″N 112°26′31″W / 46.00639°N 112.44194°W |
| Links | |
Public license information | |
| Website | thezone1039.com |
KMSM-FM (103.9 MHz) is a radio station licensed to serve Butte, Montana. The station is owned and operated by Cameron Maxwell, through licensee Desert Mountain Broadcasting Licenses LLC, and airs an active rock format.