KDO89: NOAA Weather Radio for St. Louis, Missouri
KDO89 is the NOAA Weather Radio transmitter at St. Louis (transmitter at Shrewsbury), broadcasting on 162.550 MHz at 1010 watts. It carries the National Weather Service St. Louis office's broadcast and covers 10 counties, each listed below with the SAME code an alert radio needs to wake for that county and stay quiet for the rest.
| Callsign | KDO89 |
|---|---|
| Frequency | 162.550 MHz |
| Transmitter | St. Louis (transmitter at Shrewsbury), Missouri |
| Power | 1010 watts |
| Forecast office | NWS St. Louis |
| Status | Normal (NWS data, July 2026) |
Marine radios often label 162.550 MHz as WX1, but WX channel numbers vary by brand - go by the frequency.
Counties KDO89 covers
| County | State | SAME code |
|---|---|---|
| Madison | Illinois | 017119 |
| Monroe | Illinois | 017133 |
| St. Clair | Illinois | 017163 |
| City of St. Louis | Missouri | 029510 |
| Franklin | Missouri | 029071 |
| Jefferson | Missouri | 029099 |
| Lincoln | Missouri | 029113 |
| St. Charles | Missouri | 029183 |
| St. Louis | Missouri | 029189 |
| Warren | Missouri | 029219 |
Program the six-digit code into your radio's SAME location list - the SAME code guide walks through it, and how alert radios work explains what the radio does with it.
Hearing KDO89
Any receiver that tunes 162.550 MHz FM can listen: scanners, VHF ham radios, marine sets, or a software-defined receiver. What those do not do is wake you at 3 a.m. - for that you want a dedicated radio with SAME alerting, covered in the buyer's guide.
Every Missouri transmitter, county and SAME code: NOAA Weather Radio in Missouri. Or look any county up with the finder.
Sources:
- “NWR County Coverage Listings”. weather.gov. Archived from the original on 2026-07-19. Retrieved 2026-07-16. Every figure on this page - frequency, transmitter site, power, operational status, and county SAME codes - is from this dataset. Transmitters move, change power, and go down for maintenance; verify locally before you rely on it.