[
  {
    "file": "audio/20260918T154839Z-W9SSJ-tap.wav",
    "source_capture": "working/vara-level-air-0915/arms/vara-current-kb8ay-40m-7101500-2750-sense-20260918T154839Z/tap.wav",
    "shows": "W9SSJ/KB8AY VARA session. Rig speaker audio includes received signals and the local transmit monitor.",
    "station": "W9SSJ",
    "peer": "KB8AY",
    "peer_grid": "EN82CI",
    "band_m": 40,
    "centre_hz": 7101500,
    "dial_hz": 7100000,
    "rig_mode": "PKTUSB 3000",
    "session_bandwidth_hz": 2300,
    "gateway_listing": "VARA 2750",
    "recorded_from": "CUBILUX HLMS-C4 Line IN, fed from the rig's speaker audio",
    "started_utc": "2026-09-18T15:48:46Z",
    "arm_started_utc": "2026-09-18T15:48:40.434880+00:00",
    "arm_ended_utc": "2026-09-18T15:51:43.329444+00:00",
    "samplerate": 48000,
    "channels": 1,
    "samples": 8231424,
    "duration_s": 171.488,
    "bytes": 16462892,
    "sha256": "c35119771eff9a5a5d2041750063a55dc00dbec7108ea754f130a38bf4645bcd"
  }
]