KFNS - 100.7 FM The Viper
| Genres: | Rock |
| Language: | English |
| Location: | St. Louis, Missouri (MO) USA |
| Website: | http://www.viperrocks.com |
| Short URL of Page: | http://rdo.fm/r/z8cky |
| CallSign: | KFNS |
| Frequency: | 100.7 |
| Type: | Internet, FM |
| Description: | The Viper 100.7 FM - KFNS-FM is a broadcast radio station from Troy, MO, United States, providing Active Rock music, live shows, information and entertainment. |