WXM42: NOAA Weather Radio for Hagerstown, Maryland
WXM42 is the NOAA Weather Radio transmitter at Hagerstown (transmitter at Clear Spring), broadcasting on 162.475 MHz at 1000 watts. It carries the National Weather Service Baltimore/Washington office's broadcast and covers 22 counties, each listed below with the SAME code an alert radio needs to wake for that county and stay quiet for the rest.
| Callsign | WXM42 |
|---|---|
| Frequency | 162.475 MHz |
| Transmitter | Hagerstown (transmitter at Clear Spring), Maryland |
| Power | 1000 watts |
| Forecast office | NWS Baltimore/Washington |
| 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 WXM42 covers
| County | State | SAME code | Note |
|---|---|---|---|
| Allegany | Maryland | 024001 | |
| Carroll | Maryland | 024013 | NW |
| Frederick | Maryland | 024021 | |
| Washington | Maryland | 024043 | |
| Adams | Pennsylvania | 042001 | W 1/2 |
| Bedford | Pennsylvania | 042009 | SE 1/2 |
| Franklin | Pennsylvania | 042055 | NOT N |
| Fulton | Pennsylvania | 042057 | |
| City of Winchester | Virginia | 051840 | |
| Clarke | Virginia | 051043 | |
| Fauquier | Virginia | 051061 | |
| Frederick | Virginia | 051069 | |
| Loudoun | Virginia | 051107 | NW 1/2 |
| Page | Virginia | 051139 | |
| Shenandoah | Virginia | 051171 | NE 1/2 |
| Warren | Virginia | 051187 | CENTRAL/N |
| Berkeley | West Virginia | 054003 | |
| Hampshire | West Virginia | 054027 | |
| Hardy | West Virginia | 054031 | NE |
| Jefferson | West Virginia | 054037 | |
| Mineral | West Virginia | 054057 | CENTRAL/E |
| Morgan | West Virginia | 054065 |
A county marked with a note (for example partial coverage) is served for that portion only. 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 WXM42
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 Maryland transmitter, county and SAME code: NOAA Weather Radio in Maryland. 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.