VoxLink

Joel Calado

About this app

VoxLink is a push-to-talk (PTT) client for Android that connects to SvxLink reflector servers, enabling amateur radio operators to communicate over IP.

PUSH-TO-TALK
• Hold mode — press and hold to transmit
• Latch mode — tap to toggle transmit on/off
• Configurable time-out timer (TOT) with vibration warning

HIGH-QUALITY AUDIO
• Opus codec with FIR polyphase resampling
• Adaptive jitter buffer with packet loss concealment
• Speaker and earpiece audio routing
• TX and RX audio level metering

SERVER MANAGEMENT
• Multiple server profiles with quick switching
• JSON import for easy configuration sharing
• Talkgroup selection and monitoring per server
• Live node list showing connected stations with callsign, name, and location

RELIABLE CONNECTIVITY
• Automatic reconnect on connection loss
• Network change handling (WiFi ↔ cellular)
• Foreground service with wake lock for background operation
• Battery optimization guidance for uninterrupted use

APRS
• APRS receive — Optional APRS module
• APRS messaging / beaconing — Send messages or GPS beacons automatically while on the background. Uses your device's GPS information.


MODERN DESIGN
• Material 3 / Material You with dynamic color theming
• 13 accent color options
• Clean, purpose-built interface for PTT operation

Requires access to a SvxLink reflector server. The app does not include or operate any servers. Contact your local amateur radio club or SvxLink community for server access.

No ads. No tracking. No data collection. Your server credentials are stored locally on your device only.

What’s new

- Car Mode: a big, glanceable screen with easy push-to-talk for driving
- Bluetooth PTT button support
- Extra Loudness toggle to boost speaker volume
- Better layout on small/compact screens
- APRS now disconnects cleanly when you quit
- Disconnect button in the notification now fully ends the session
- Various stability and reliability fixes