| 1 | A | B | C | D |
| --- | --- | --- | --- | --- |
| 2 | NOAA Weather Radio - Radio frequencies used |  |  |  |
| 3 | Official name | Frequency | Marine Channel | Public Alert Channel |
| 4 | WX1 | 162.550 MHz | 39B | 7 |
| 5 | WX2 | 162.400 MHz | 36B | 1 |
| 6 | WX3 | 162.475 MHz | 97B | 4 |
| 7 | WX4 | 162.425 MHz | 96B | 2 |
| 8 | WX5 | 162.450 MHz | 37B | 3 |
| 9 | WX6 | 162.500 MHz | 38B | 5 |
| 10 | WX7 | 162.525 MHz | 98B | 6 |
| 11 | WX8 | 161.650 MHz | 21B | - |
| 12 | WX9 | 161.775 MHz | 83B | - |
| 13 | WX10 | 163.275 MHz | 113B | - |

Question: How broad was the range of frequencies of WX1-3 used by NOAA Weather Radio?
Answer: WX1 162.55 MHz was the first frequency, then WX2 162.4 and WX3 162.475 were used by NOAA Weather Radio.