Technical Notes

The radio signals are received via 3 software-defined radio connected to a Debian 12 virtual server. SDRtrunk is used stream and send calls to Broadcastify.

Talk Groups

Talkgroup 301- Dispatch, Talkgroup 303 1st/5th Precinct. Talkgroup 331 2nd Precinct, Talkgroup 305 3rd/4th Precinct

Outages/Issues/Upgrades

1/6/2024 Initially used a "no name" software-defined radio (SDR) for reception.  Experienced several problems with the radio's stability. Changed to an RTL-SDR V3. Stability and performance immediately increased.

1/9/2024 Offline due to power surge

1/11/2024 Feed restored

1/25/2024 UPS Failure, related to 1/9/2024 issue

1/27/2028 Replaced UPS, feed restored

6/4/2024 13:48 Troubleshooting no audio

6/4/2024 14:08 Feed restored. Control frequency issue.

6/22/2024 20:40 troubleshooting no audio

6/22/2024 20:57 Feed restored. System did not recover properly from power outage on 6/21/2024

8/6/2024 23:56 Audio feed offline

8/7/2024 9:35 Audio feed restored

11/10/2024 16:51 No audio.

11/10.2024 17:41 Server restarted, audio restored.

11/29/2024 21:34 No Audio

11/30/2024 14:14 Server restarted, audio restored.

1/10/2025 Feed went offline at approximately 21:00.

1/14/2025 Feed restored at 22:50 

2/28/2025 Reconfigured server to more gracefully recover from power outages.

3/1/2025 - 3/9/2025 Preparing for migration from Raspberry Pi's to a server. Intermittent outages.

3/9/25 Migrated system from 2 Raspberry Pi 4s to a single Debian 12 server. Upgraded to RTL-SDR v4.

3/14/25 Migrated system from OP25 to SDRtrunk. Added 2 additional RTL-SDRs for additional bandwidth coverage and started sending calls for all Chesapeake Trunked System talk groups.