Bluetooth HAM Radio Audio Bridge
Budget: €30 – €250 EUR
I want to build a compact, two-way Bluetooth audio interface for a HAM radio. The core goal is a 2-way bridge between the radio and a realtime camera running on a linux board via buletooth.
Digital or analog volume adjustment is needed
Device must be battery and/or 12V DC operated, with DC12V charging battery if present
What I need:
• Full-duplex transmit and receive so both the radio’s microphone and speaker lines travel over Bluetooth.
• A design that plays nicely with typical HAM radio mic/headphone levels.
• Optional Radio PTT Sense to mute microphone input if PTT button not pressed
• Stable pairing, clear voice quality, and minimal latency.
Please provide:
1. Schematic and bill of materials (module choice is up to you; CSR, ESP32, or similar is fine).
2. Firmware or configuration files that handle the bidirectional link.
3. Assembly and quick-start instructions I can follow to reproduce the build.
4. Board 3d Files
If you have experience interfacing Bluetooth audio with amateur radio gear, I’d love to see it.
Digital or analog volume adjustment is needed
Device must be battery and/or 12V DC operated, with DC12V charging battery if present
What I need:
• Full-duplex transmit and receive so both the radio’s microphone and speaker lines travel over Bluetooth.
• A design that plays nicely with typical HAM radio mic/headphone levels.
• Optional Radio PTT Sense to mute microphone input if PTT button not pressed
• Stable pairing, clear voice quality, and minimal latency.
Please provide:
1. Schematic and bill of materials (module choice is up to you; CSR, ESP32, or similar is fine).
2. Firmware or configuration files that handle the bidirectional link.
3. Assembly and quick-start instructions I can follow to reproduce the build.
4. Board 3d Files
If you have experience interfacing Bluetooth audio with amateur radio gear, I’d love to see it.