WWG90: NOAA Weather Radio for Janesville, Wisconsin
WWG90 is the NOAA Weather Radio transmitter at Janesville (transmitter at Milton - Rock County), broadcasting on 162.425 MHz at 300 watts. It carries the National Weather Service Milwaukee/Sullivan office's broadcast and covers 7 counties, each listed below with the SAME code an alert radio needs to wake for that county and stay quiet for the rest.
| Callsign | WWG90 |
|---|---|
| Frequency | 162.425 MHz |
| Transmitter | Janesville (transmitter at Milton - Rock County), Wisconsin |
| Power | 300 watts |
| Forecast office | NWS Milwaukee/Sullivan |
| Status | Normal (NWS data, July 2026) |
Marine radios often label 162.425 MHz as WX4, but WX channel numbers vary by brand - go by the frequency.
Counties WWG90 covers
| County | State | SAME code |
|---|---|---|
| Boone | Illinois | 017007 |
| Stephenson | Illinois | 017177 |
| Winnebago | Illinois | 017201 |
| Dane | Wisconsin | 055025 |
| Green | Wisconsin | 055045 |
| Rock | Wisconsin | 055105 |
| Walworth | Wisconsin | 055127 |
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 WWG90
Any receiver that tunes 162.425 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 Wisconsin transmitter, county and SAME code: NOAA Weather Radio in Wisconsin. 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.