ThinLine Radio v7.0 Beta 5

This release includes Whisper prompt support, major tone detection improvements for analog conventional channels, and all bug fixes from the previous beta cycle.

Major Features

• Custom Whisper transcription prompts for improved accuracy with radio-specific terminology
• Major tone detection improvements for analog conventional channels
  • Dynamic noise floor estimation (20th percentile method)
  • Parabolic peak interpolation for sub-bin accuracy (±3.9 Hz → ±0.5 Hz)
  • Force-split detection with lookahead for frequency drift
  • Bandpass filtering (200-3000 Hz) and dynamic normalization
  • Increased frequency merging tolerance (±15 Hz → ±20 Hz) for analog drift
  • Note: Tone detection is still in BETA - improvements based on theory, not fully tested on analog channels by dev team (all digital systems)

Bug Fixes

• Fixed talker alias ingestion
• Fixed talkgroup sorting persistence
• Added admin-configurable tag colors
• Fixed P25 Phase II simulcast patch calls
• Fixed template compilation errors

Credits

Tone detection techniques inspired by icad_tone_detection by thegreatcodeholio (Apache 2.0 License)

See CHANGELOG.md for full details.

Community Testing Welcome

We encourage community testing and feedback on the tone detection improvements, especially for analog conventional channels.