| Radyo Natin Calbayog | |
| Callsign: | DYSI |
| City: | Calbayog |
| Area: | Samar |
| Branding: | 104.9 Radyo Natin |
| Airdate: | December 16, 1997 |
| Frequency: | 104.9 MHz |
| Format: | Community radio |
| Language: | Waray, Filipino |
| Licensing Authority: | NTC |
| Power: | 1,000 watts |
| Erp: | 5,000watts |
| Callsign Meaning: | Samar Island |
| Network: | Radyo Natin Network |
| Owner: | MBC Media Group |
DYSI (104.9 FM), broadcasting as 104.9 Radyo Natin, 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]