Berkeley PD Fatal Officer Involved Shooting — September 21, 2023
Details are in this YouTube video .
Berkeley Archive
An archived collection of Berkeley-area public safety monitoring resources, including raw incident videos, radio system notes, dispatch codes, and historical reference materials.
Explore the Berkeley Collection
Radio codes, common dispatch terms, system notes, and historical incident video from the archive.
Raw OIS Footage
Berkeley PD Fatal Officer Involved Shooting — November 6, 2023
Details are in this YouTube video .
Oakland PD OIS — Armed Carjacking Suspect — February 17, 2023
Details are in this YouTube video .
Hayward PD Fatal Officer Involved Shooting — September 6, 2023
Details are in this YouTube video .
System Technical Insights
The Berkeley radio and transcription stack combined open-source radio tools, SDR hardware, live playback, and automated transcription.
- Trunk-Recorder: Recorded each individual transmission on Berkeley-area talkgroups.
- Rdio-Scanner: Played transmissions live and allowed listeners to customize channels.
- Trunk-Transcribe: Sent recorded audio through OpenAI Whisper to produce text transcriptions.
- crimeisdown-v3, heavily modified: Displayed transcriptions on a site with historical review.
Each transmission was saved as its own file so listeners could review individual calls without needing to scrub through long recordings.
Hardware Components
- SDRs: Three Nooelec RTL-SDR v5 bundles for RF capture.
- Raspberry Pi 4: Ran Trunk-Recorder and Rdio-Scanner.
A stronger desktop is recommended for very heavy voice activity. The stack ran behind an NGINX proxy for API and site hosting.
Hosted Frequencies
| DEC | HEX | Mode | Alpha Tag | Description | Tag | Group | Priority |
|---|---|---|---|---|---|---|---|
| 2105 | 839 | D | Berkeley FD1 | Fire Dispatch 1 | Fire Dispatch | Berkeley | 1 |
| 2106 | 83a | D | Berkeley FD2 | Fire Dispatch 2 | Fire Dispatch | Berkeley | 1 |
| 2112 | 840 | D | Berkeley FD Emer | Fire Emergency | Emergency Ops | Berkeley | 1 |
| 2671 | a6f | D | ACFD Command 11 | Command 11 - Berkeley | Fire-Tac | Alameda County Fire | 1 |
| 2672 | a70 | D | ACFD Command 12 | Command 12 - Berkeley | Fire-Tac | Alameda County Fire | 1 |
| 2691 | a83 | D | ACFD Tac 31 | Tac 31 - Berkeley | Fire-Tac | Alameda County Fire | 1 |
| 2692 | a84 | D | ACFD Tac 32 | Tac 32 - Berkeley | Fire-Tac | Alameda County Fire | 1 |
| 2711 | a97 | D | ACFD Tac 51 | Tac 51 - Berkeley | Fire-Tac | Alameda County Fire | 1 |
| 2712 | a98 | D | ACFD Tac 52 | Tac 52 - Berkeley | Fire-Tac | Alameda County Fire | 1 |
| 3105 | c21 | T | Berkeley PD1 | Police Dispatch | Law Dispatch | Berkeley | 1 |
| 3106 | c22 | T | Berkeley PD2 | Police Ch 2 | Law Tac | Berkeley | 1 |
| 3108 | c24 | T | Berkeley PD4 | Police Ch 4 | Law Tac | Berkeley | 1 |
| 3110 | c26 | T | Berkeley PD6 | Police Investigations 1 | Law Tac | Berkeley | 1 |
| 3605 | e15 | T | UCB PD1 DSP | Police Dispatch | Law Dispatch | UC Berkeley | 1 |
| 3606 | e16 | D | UCB PD2 | Police Ch 2 | Law Tac | UC Berkeley | 1 |
| 3608 | e18 | D | UCB PD4 ENF | Police Enforcement | Law Tac | UC Berkeley | 1 |
| 3609 | e19 | D | UCB PD5 | POLICE TAC | Law Tac | UC Berkeley | 1 |
Note: BPD3, RB1, BPD5, BPD7, and UCPD6 were not available due to encryption.
Transcription System Overview
The transcription and historical site ran on a DigitalOcean droplet using Docker. Audio was stored on AWS S3, and Whisper transcription was used for automated text review.
Real-time alerts to phone and Slack were triggered on matched phrases, making it easier to quickly identify and review priority incidents.
