| Country | PH |
|---|---|
| Callsign | DYSI |
| City | Calbayog |
| Area | Samar |
| Branding | Radyo Natin 104.9 |
| Airdate | December 16, 1997 |
| Frequency | 104.9 MHz |
| Format | Community radio |
| Language | Waray, Filipino |
| Licensing authority | NTC |
| Power | 1,000 watts |
| Erp | 5,000 watts |
| Callsign meaning | Samar Island |
| Network | Radyo Natin Network |
| Owner | MBC Media Group |
DYSI (104.9 FM), broadcasting as Radyo Natin 104.9, is a radio station owned and operated by MBC Media Group. The station's Studio & Transmitter is located at Kapitanes Grill Compound, Maharlika Highway, Brgy. Obrero, Calbayog.[1][2][3]