Southern Maryland Online - Serving Calvert, Charles, & St. Mary's Counties.  Click here to go to the Front Page of
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Southern Maryland Police & Fire Radio Scanner


We have 50 slots available for listening.  If all of the slots are used, you will receive an error message when trying to connect.  You can see the slot usage here.

12-July: We are seeking partners to host scanners in Calvert and Charles county.  If you have a scanner and a PC (we use an old PII) that you can dedicate, please contact us.  We'll provide the know-how and the server.  For your trouble, we'll promote your business here and in the intro audio on the scanner feed.

12-July: Our server is now on battery backup. This should minimize future downtime.

Need Help?

If you need help or the scanner is not working, please contact us.  If you would like us to get back in touch with you, please be sure to include your email address in the comments field.  You can also get Live Help:

Give us Feedback on this Service:

Please let us know how this service is working for you.

Services Being Scanned:

The physical scanner is located in Callaway and as such may not bring in all signals advertised below.

  • St. Mary's Fire Page & Hospital

  • St. Mary's Fire/EMS

  • St. Mary's Sheriff

  • Calvert Fire

  • Calvert Sheriff

  • Charles Fire

  • PAXRVR Security/Fire

10 Codes:

The police and emergency services personnel speak using 10 codes.  This makes communications more concise.  The best known codes are "10-4" meaning "OK, I understand" and "What's your 10-20?" as in "where are you at now?"  In order to follow the conversations, you will need to know the codes.  A reference sheet is here.

Pick the Audio Tool that works best for you:

Windows Media Player (Windows)
Click Here to launch the broadcast in Windows Media Player on your PC.

RealPlayer (Mac & Windows)

You can use the built-in player above or launch the Real Player on your PC/Mac by clicking here.  You can download the free Real Player here.  (They are also trying to sell you a version of their player with a free trial.  This is not the free version.)

Apple iTunes (Mac & Windows)
Macintosh users can click here.

Windows Users:

  1. Open iTunes

  2. Advanced->Open Stream

  3. Enter the following URL:

Download a free copy of iTunes for Windows or Macintosh here.

WinAmp (Windows)
  1. Open WinAmp

  2. File->Play URL

  3. Enter the following URL:

If your connection is being blocked by a corporate FireWall, try this link:

Download a free copy of WinAmp for Windows here.

XMMS (Linux)
  1. Use the following URL:

Download a free copy of XMMS for Linux here.

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