OpenMHz

Washington Metropolitan Area Transit Authority
Washington, DC
Radio system for Washington Metropolitan Area Transit Authority
DC Fire and EMS
Washingtond, DC
Radio system for DC Fire
Alexandria VA
Alexandria, VA
Trunked system for the City of Alexandria.
Fairfax County Project 25
Fairfax County, VA
Trunked system for Fairfax County.
City of Davis
Davis, CA
City of Davis CA SmartNet system
Charlotte UASI
Charlotte, NC
Charlotte area unified P25 sytem.
Dakota County MN ARMER
Lakeville, MN
Monitoring Dakota County and Statewide Interop Talkgroups.
Scott County MN ARMER
Prior Lake, MN
Scott County and Carver County Simulcast system. Also picks up sporadic calls from Bloomington Eden Prairie and McLeod County.
SouthSound 911
Tacoma, WA
SouthSound 911 Motorola ASTRO25 Phase 2 TDMA Digital Trunked Public Safety Simulcast Radio System in Pierce County WA. Monitoring the Pierce Transit leg of wide area system System BEE00 01E7
Virginia Beach P25 Phase 2
Virginia Beach, VA
Virginia Beach VA P25 System
Arlington County
Arlington, VA
Trunk system for Arlington VA
STARCOM21 Site 146
McHenry, IL
STARCOM21 Site 146
Wake County NC Simulcast
Raleigh, NC
Covers PD Raleigh Apex Holly Springs Garner Knightdale Roseville Wendell Wake Forest Wake Co Sherrifs Office NC SHP Troop C Dist 3 Transportation GoRaleigh GoTriangle Wake Coordinated Fire Depts EMS DIspatch Public Events
North Carolina VIPER Central NC Calls
Raleigh, NC
Covers IMAP Motorist Assistance Area Hospital ED Intake from EMS Patient Status. Harnett County PD EMS and FD traffic. NOTE This is supplied by a RPi3 so traffic is heavily filtered calls may be missed or poor quality during peak traffic
Chesapeake VA P25 Phase 2
Chesapeake, VA
Chesapeake Virginia P25 Phase 2
Eastern Shore Maryland
Centreville, MD
First Responders Interoperable Radio System Team FIRST
Charlotte UASI Region
Charlotte, NC
Charlotte UASI Region Charlotte NC Project 25 Phase I APCO25 Common Air Interface Exclusive System ID 2D0
Virginia State Police Division 5
Chesapeake, VA
Virginia Stars System including 5th Division VSP from Chesapeake and Virginia Beach repeaters Some calls will be duplicates
Charles County
Waldorf, MD
Charles County MD TRS
PG County
College Park, MD
PG County North Simulcast Site
Anne Arundel County
Annapolis, MD
Anne Arundel County TRS
York County PA
York City, PA
York County Pennsylvania P25 System
Rice County MN ARMER
Faribault, MN
Rice County Minnesota ARMER
More systems

All the calls

Every call, on every talkgroup is recorded

Go back in time

Missed a call? Not a problem, everything is archived!

Don't just scan, hear it all!

Most large cities use trunked radio systems to get the most use out of their assigned radio spectrum. With trunked systems, the transmission are constantly hopping to different frequencies. Only top of the line radio scanner are able to follow these transmission and even those scanners are limited to capturing a single transmission at a time.

It often gets said that Software wil eat the World, and that is certainly true here. Using a cheap Software Defined Radio (SDR), it is possible capture all of the transmission on a system. Scanners try to determine which frequency a group is using and tune into that specific frequency. SDRs make it possible to capturea wide swatch of spectrum, covering all of the frequencies a system could use. Using software it is possible to decode which groups are using which frequencies and extract those transmission from that broad swatch of spectrum.

Trunk Recorder is a Linux program that I wrote, that is being used to capture all of the recordings on this site. This website makes it easy for folks running Trunk-Recorder to share their recordings.

Want to record your local radio system?

Join us! Record a local radio system and share it with the world. If you have a spare computer, it is easy to get started. With a $25 SDR or two, you can capture an entire system. It does take a little bit of work to get things setup, but we are here to help and answer questions.

Learn More