San Diego and Poway Fire Dispatch 7B Admin 7A

EMS Cmd 7E

Traffic Accident Cmd 7H Traffic Accident Tac 7I

Southbay CMD 8A Southbay Tac 8B Southbay Tac 8C

West Cmd 8D West Tac 8E West Tac 8F

East Cmd 8G East Tac 8H East Tac 8I

North and Poway Cmd 9A North and Poway Tac 9B North and Poway Tac 9C

Overflow Cmd 9D Overflow Tac 9E Overflow Tac 9F Overflow

Wildland Cmd 9G Overflow and Wildland Tac 9H Overflow and Wildland Tac 9I Overflow and Wildland Tac 9J Overflow and Wildland Tac 9K Overflow and Wildland Tac 9L

9M is used for Air to Ground support during wild land fires.  

The set up being used is 2 SDR (software defined radio) usb dongles connected to a mini computer.

The software being used is Trunk Recorder operate the SDR's.  Liquidsoap is used to upload the traffic to Broadcastify.

Trunk Recorder constantly monitors the control channel.  When a selected talk group is detected on the control channel the computer tunes an SDR to the active channel.  If more than one talk group becomes acitve on the system, the SDR's and program are able to record multiple converations at the same time.  Once a transmission ends, a audio recording is made.  Then it is set to be uploaded.  If multiple files are recorded and need to be uploaded, they will uploaded in the order they are recorded. 

This allows for the listener to hear every transmission.