{
  "ok": true,
  "mode": "JS8",
  "tool": "webftr-js8-quick-window-scan",
  "tool_version": "step63-source-exact-interleaver-whitening-index-extract",
  "input_wav": "/decoders/js8_test.wav",
  "rx_only": true,
  "safety": {
    "tx": false,
    "ptt": false,
    "tune": false,
    "send": false,
    "js8call_runtime_control": false
  },
  "wav": {
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    "frames": 2304199,
    "rms_dbfs": -9.417419601662104,
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    "clipped": false
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  "scan_params": {
    "window_seconds": 60.0,
    "hop_seconds": 6.0,
    "max_seconds": 240.0,
    "output_dir": "/decoders/js8_decoder/runtime/step83_quick_windows"
  },
  "selected_window": {
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    "end_seconds": 78.0,
    "duration_seconds": 60.0,
    "avg_activity_score": -6.286,
    "active_chunks": 10,
    "chunk_count": 10,
    "selection_score": 18.714,
    "window_wav": "/decoders/js8_decoder/runtime/step83_quick_windows/js8_quick_selected_window.wav",
    "tone_candidates": [
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        "freq_hz": 1000.0,
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      {
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      {
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      {
        "freq_hz": 1050.0,
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      {
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      {
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        "relative_db": -32.46,
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      {
        "freq_hz": 950.0,
        "relative_db": -35.04,
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    ]
  },
  "selected_window_wav": "/decoders/js8_decoder/runtime/step83_quick_windows/js8_quick_selected_window.wav",
  "top_windows": [
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      "end_seconds": 78.0,
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      "window_wav": "/decoders/js8_decoder/runtime/step83_quick_windows/js8_quick_selected_window.wav",
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      "avg_activity_score": -6.288,
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  ],
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    {
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    {
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    {
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    {
      "chunk_index": 6,
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      "rms_dbfs": -8.61,
      "peak_dbfs": -2.39,
      "activity_score": -5.7277
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    {
      "chunk_index": 7,
      "start_seconds": 42.0,
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      "rms_dbfs": -9.99,
      "peak_dbfs": -2.6,
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  ],
  "chunk_tail_preview": [
    {
      "chunk_index": 25,
      "start_seconds": 150.0,
      "end_seconds": 156.0,
      "rms_dbfs": -9.46,
      "peak_dbfs": -2.8,
      "activity_score": -6.5977
    },
    {
      "chunk_index": 26,
      "start_seconds": 156.0,
      "end_seconds": 162.0,
      "rms_dbfs": -8.7,
      "peak_dbfs": -3.5,
      "activity_score": -5.8709
    },
    {
      "chunk_index": 27,
      "start_seconds": 162.0,
      "end_seconds": 168.0,
      "rms_dbfs": -10.09,
      "peak_dbfs": -0.89,
      "activity_score": -7.133
    },
    {
      "chunk_index": 28,
      "start_seconds": 168.0,
      "end_seconds": 174.0,
      "rms_dbfs": -8.69,
      "peak_dbfs": -3.67,
      "activity_score": -5.8733
    },
    {
      "chunk_index": 29,
      "start_seconds": 174.0,
      "end_seconds": 180.0,
      "rms_dbfs": -9.32,
      "peak_dbfs": -3.03,
      "activity_score": -6.4728
    },
    {
      "chunk_index": 30,
      "start_seconds": 180.0,
      "end_seconds": 186.0,
      "rms_dbfs": -17.31,
      "peak_dbfs": -2.41,
      "activity_score": -14.429
    },
    {
      "chunk_index": 31,
      "start_seconds": 186.0,
      "end_seconds": 192.0,
      "rms_dbfs": -22.78,
      "peak_dbfs": -10.06,
      "activity_score": -20.2802
    },
    {
      "chunk_index": 32,
      "start_seconds": 192.0,
      "end_seconds": 192.017,
      "rms_dbfs": -23.23,
      "peak_dbfs": -14.09,
      "activity_score": -20.9354
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  ],
  "decodes": [],
  "warnings": [
    "Quick-window-scan only selects a likely analysis window; it is not a JS8 text decoder."
  ],
  "next_action": "Run sync/soft-symbol/FEC probes on selected_window_wav. Message unpack is not implemented in Step 54."
}