{
  "type": "product",
  "id": "garmin-gtx-345",
  "url": "https://www.nomyparts.com/companies/garmin/products/gtx-345/",
  "name": "GTX 345",
  "fullName": "GTX 345 Mode S ADS-B surveillance transponder",
  "manufacturer": {
    "id": "garmin",
    "name": "Garmin",
    "url": "https://www.nomyparts.com/companies/garmin/"
  },
  "category": {
    "id": "communications",
    "name": "Comms & GCS"
  },
  "subcategory": {
    "id": "ads-b-transponders",
    "name": "ADS-B transponders"
  },
  "description": "GTX 345 is an aircraft Mode S transponder with ADS-B transmission and reception. Its panel-mounted controls and traffic interfaces support avionics integration, while internal GNSS and altitude-encoder options depend on the selected unit configuration.",
  "manufacturerPage": "https://static.garmin.com/pumac/190-00734-11_08.pdf",
  "certifications": [],
  "specifications": [
    {
      "id": "grade",
      "name": "Grade",
      "sources": [],
      "verified": null,
      "value": "Aerospace-grade"
    },
    {
      "id": "market",
      "name": "Market",
      "sources": [],
      "verified": null,
      "value": "Civil"
    },
    {
      "id": "platform-class",
      "name": "Platform class",
      "sources": [],
      "verified": null,
      "value": [
        "Large UAS (25–150 kg)",
        "Heavy UAS (>150 kg)",
        "eVTOL",
        "Manned aircraft"
      ]
    },
    {
      "id": "airframe",
      "name": "Airframe",
      "sources": [],
      "verified": null,
      "value": [
        "Any"
      ]
    },
    {
      "id": "availability",
      "name": "Availability",
      "sources": [],
      "verified": null,
      "value": "In production"
    },
    {
      "id": "function",
      "name": "Function",
      "sources": [
        "https://static.garmin.com/pumac/190-00734-11_08.pdf"
      ],
      "verified": "2026-10-19",
      "value": "Transponder"
    },
    {
      "id": "datalink",
      "name": "Datalink",
      "sources": [
        "https://static.garmin.com/pumac/190-00734-11_08.pdf"
      ],
      "verified": "2026-10-19",
      "value": "1090ES"
    },
    {
      "id": "transponder-modes",
      "name": "Transponder modes",
      "sources": [
        "https://static.garmin.com/pumac/190-00734-11_08.pdf"
      ],
      "verified": "2026-10-19",
      "value": "Mode S with 1090 MHz Extended Squitter ADS-B Out; built-in 1090 MHz and UAT receivers for ADS-B In."
    },
    {
      "id": "ads-b-in",
      "name": "ADS-B In",
      "sources": [
        "https://static.garmin.com/pumac/190-00734-11_08.pdf"
      ],
      "verified": "2026-10-19",
      "value": true
    },
    {
      "id": "antenna",
      "name": "Antenna",
      "sources": [
        "https://static.garmin.com/pumac/190-00734-11_08.pdf"
      ],
      "verified": "2026-10-19",
      "value": "Bottom-mounted external transponder antenna for standard GTX 345."
    },
    {
      "id": "antenna-diversity",
      "name": "Antenna diversity",
      "sources": [
        "https://static.garmin.com/pumac/190-00734-11_08.pdf"
      ],
      "verified": "2026-10-19",
      "value": false
    },
    {
      "id": "physical-interfaces",
      "name": "Physical interfaces",
      "sources": [
        "https://static.garmin.com/pumac/190-00734-11_08.pdf"
      ],
      "verified": "2026-10-19",
      "value": [
        "ARINC 429",
        "RS-232",
        "RS-422",
        "Discrete I/O"
      ]
    }
  ],
  "sources": [
    {
      "url": "https://static.garmin.com/pumac/190-00734-11_08.pdf",
      "checked": "2026-10-19"
    }
  ],
  "updated": "2026-11-04",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "licenseName": "CC BY 4.0",
  "attribution": "Source: NomyParts, https://www.nomyparts.com/companies/garmin/products/gtx-345/"
}