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If you hear the Civil Defence Siren turn on and listen to the nearest operating local radio station. Important messages from Civil Defence will be broadcasted first on the following radio stations:
| Classic Hits | 98.8 FM |
| Hokonui Gold | 94.8 FM |
| More FM | 89.2 FM and 1224 AM |
| Newstalk ZB | 864 AM |
| Radio Southland | 96.4 FM |
If none of these stations are on air in a major emergency, you are advised to tune to the station that you can receive with the strongest signal.

