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Southern Maryland Police & Fire Radio Scanners

Scanner ONE-A & ONE-B  Charles County
ONE-A: Fire & EMS
ONE-B: Sheriff, State Police, Nice Bridge Police
Both scanners are operated by ScanMD Fire & Rescue Solutions
Services Being Scanned
  • ONE-A: Charles County Fire & EMS

  • ONE-B: Charles County Sheriff's Office, Maryland State Police La Plata Barrack, & Harry Nice Bridge Police.

Scanner TWO Calvert County
Scanner TWO is sponsored by Pepper's Pet Pantry in Solomons
The Operator is FrequentFlier
If you are using FireFox, you may need to install a plug-in to use the embedded Windows Media player above. Please read this page.

We have 100 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.

Services Being Scanned
  • Calvert County Fire/EMS

  • Calvert County Sheriff's Office

  • Maryland State Police, Calvert County (Including Helo)

Scanner THREE  St. Mary's County
Scanner THREE is operated by Bay District Volunteer Fire Dept.
Important Note
On 05-AUG-2013, the St. Mary's Co. government switched to an all-digital communications system. As such, the old analog scanners are no longer able to pickup broadcasts. Furthermore, the police have encrypted their channels. Therefore, the public can only listen to fire and EMS broadcasts via a digital scanner.
Services Being Scanned
  • Fire/EMS Dispatch
  • EMS Tac
  • Fire Tac Channels - Tac 1 - 13
Scanner TWO-Alt  Calvert County
Scanner TWO-Alt is operated by Bay District Volunteer Fire Dept.
Services Being Scanned
The feed will broadcast fire/EMS scanner feed from Calvert County. The feed will include all dispatch and TAC channels. The following talk groups are monitored:
  • Fire/EMS Main 1840
  • Fire Tac1 1872
  • Fire Tac2 1904
  • Fire Tac3 1936
  • Emergency 2044
  • County Meet 2480
Related Information
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.


  • For the latest information on scanner issues, maintenance, and reconfigurations in times of local emergencies, please refer to the Scanner Activity Forum.

  • Firefox, Apple Safari, Google Chrome Users: If you do not already have the Windows Media Player Plug-in installed, you will be prompted to download it from  You only need the plug-in if you plan to use the players built into this page.  You can alternatively click on one of the icons for the other players.

  • Opera Users: The built-in Windows Media player does not work in these browsers.  Please click on one the small icons for another player under the respective scanner channel.

Need Help or Scanner Feed Offline?

If you note that the scanner feed is offline, please click on the link for the respective scanner operator and send them a short, polite note advising of the problem. (Please note that you must be a registered member of the Forums in order to send a message.) If the problem persists, or you need general assistance involving use of the audio players above, please contact the Support Staff.

Sometimes, the scanner may require human attention and our staff is unaware of the problem.  Your feedback will help us ensure a high availability of the service.

Page last updated: 28-OCT-2014