KZZ57: NOAA Weather Radio for Rockford, Illinois
KZZ57 is the NOAA Weather Radio transmitter at Rockford (transmitter at Latham Park), broadcasting on 162.475 MHz at 1000 watts. It carries the National Weather Service Chicago office's broadcast and covers 8 counties, each listed below with the SAME code an alert radio needs to wake for that county and stay quiet for the rest.
| Callsign | KZZ57 |
|---|---|
| Frequency | 162.475 MHz |
| Transmitter | Rockford (transmitter at Latham Park), Illinois |
| Power | 1000 watts |
| Forecast office | NWS Chicago |
| Status | Normal (NWS data, July 2026) |
Marine radios often label 162.475 MHz as WX3, but WX channel numbers vary by brand - go by the frequency.
Counties KZZ57 covers
| County | State | SAME code |
|---|---|---|
| Boone | Illinois | 017007 |
| DeKalb | Illinois | 017037 |
| Lee | Illinois | 017103 |
| Ogle | Illinois | 017141 |
| Stephenson | Illinois | 017177 |
| Winnebago | Illinois | 017201 |
| Green | Wisconsin | 055045 |
| Rock | Wisconsin | 055105 |
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 KZZ57
Any receiver that tunes 162.475 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 Illinois transmitter, county and SAME code: NOAA Weather Radio in Illinois. 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.