{
  "status": "Synthetic ideal timing examples, not a captured signal",
  "dot_duration_units": 1,
  "dash_duration_units": 3,
  "gap_units": {
    "within_letter": 1,
    "between_letters": 3,
    "between_words": 7
  },
  "examples": [
    {
      "text": "A",
      "gap_units": 1,
      "duration_units": 5
    },
    {
      "text": "ET",
      "gap_units": 3,
      "duration_units": 7
    },
    {
      "text": "E T",
      "gap_units": 7,
      "duration_units": 11
    }
  ],
  "source": "https://www.itu.int/dms_pubrec/itu-r/rec/m/R-REC-M.1677-1-200910-I!!PDF-E.pdf",
  "source_section": "Annex1 PartI section2; verified2026-09-27",
  "limits": [
    "No receiver noise, jitter, threshold or speed-estimation model.",
    "The same dot-dash sequence with different gaps is a different timed signal.",
    "Removing gap information creates ambiguity; intact ideal timing distinguishes these examples.",
    "No trailing message gap is added to stated durations."
  ]
}