Swiss Glider

Public Access

Subscription access is open to all pilots under the same terms. Every subscriber receives an identical telemetry stream over WebSocket. No per-user filtering is performed server-side.

const ws = new WebSocket('ws://localhost:8080/public/ogn');
ws.onmessage = (event) => {
  const data = JSON.parse(event.data);
  console.log(data);
};

Schema (TelemetryEventV1)

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "TelemetryEventV1",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "v",
    "ts",
    "addr",
    "lat",
    "lon"
  ],
  "properties": {
    "v": {
      "const": "telemetry_v1"
    },
    "ts": {
      "type": "string",
      "description": "ISO 8601 UTC timestamp"
    },
    "addr": {
      "type": "string"
    },
    "lat": {
      "type": "number"
    },
    "lon": {
      "type": "number"
    },
    "alt_msl": {
      "type": "number"
    },
    "gs_kmh": {
      "type": "number"
    },
    "track_deg": {
      "type": "number"
    },
    "vario_ms": {
      "type": "number"
    },
    "aircraft_type": {
      "enum": [
        "glider",
        "tow",
        "helicopter",
        "parachute",
        "drop_plane",
        "hang_glider",
        "paraglider",
        "powered",
        "jet",
        "balloon",
        "uav",
        "unknown"
      ]
    },
    "privacy": {
      "type": "boolean"
    },
    "source": {
      "const": "OGN"
    },
    "turn_rate_rot": {
      "type": "number"
    },
    "receiver": {
      "type": "string"
    },
    "signal_db": {
      "type": "number"
    },
    "callsign": {
      "type": "string"
    },
    "gps_accuracy": {
      "type": "string"
    }
  }
}

Example payload

{
  "v": "telemetry_v1",
  "ts": "2026-02-08T20:00:00Z",
  "addr": "D-1234",
  "lat": 46.9,
  "lon": 7.4,
  "alt_msl": 1250,
  "gs_kmh": 120,
  "track_deg": 90,
  "vario_ms": 1.5,
  "aircraft_type": "glider",
  "source": "OGN"
}