---
title: "GET /udl/transponder"
method: GET
path: "/udl/transponder"
tags: ["Comm"]
---

# GET /udl/transponder

`GET /udl/transponder`

## Request

- Base URL: `https://unifieddatalibrary.com`
- URL: `https://unifieddatalibrary.com/udl/transponder`
- Auth: none declared

Service operation to dynamically query data by a variety of query parameters not specified in this API documentation. See the queryhelp operation (`/udl/<datatype>/queryhelp`) for more details on valid/required query parameter information.

## Query parameters

- `firstResult` integer
- `maxResults` integer

## Response `200`

OK

- TransponderAbridged[]
  - `id` string: Unique identifier of the record, auto-generated by the system.
  - `idComm` string, required: ID of the parent Comm object for this transponder.
  - `name` string: Optional name of the transponder.
  - `classificationMarking` string, required: Classification marking of the data in IC/CAPCO Portion-marked format.
  - `nid` string: Optional external network id as provided data source.
  - `tid` string: Optional external transponder id as provided data source.
  - `ttf` number, double: Transponder Translation Factor. This is the frequency difference between the uplink received by a satellite, and the downlink transmitted back. It varies satellite to satellite dependent on the mission.
  - `symbolRate` number, double: Symbol rate is the number of symbol changes, waveform changes, or signaling events, across the transmission medium per time unit using a digitally modulated signal or a line code. Also measured in Hz.
  - `fec` integer: Forward error correction, e.g. 0=Auto, 1 = 1/2, 2 = 2/3, 3 = 3/4, 4 = 5/6, 5 = 7/8, 6 = 8/9, 7 = 3/5, 8 = 4/5, 9 = 9/10, 15 = None.
  - `modulation` string: Transponder modulation, e.g. Auto, QPSK, 8PSK.
  - `format` string: Format.
  - `system` string: Transponder system, e.g. DVB-S, DVB-S2.
  - `source` string, required: Source of the data.
  - `origin` string: Originating system or organization which produced the data, if different from the source. The origin may be different than the source if the source was a mediating system which forwarded the data on behalf of the origin system. If null, the source may be assumed to be the origin.
  - `origNetwork` string: The originating source network on which this record was created, auto-populated by the system.
  - `dataMode` 'REAL' | 'TEST' | 'SIMULATED' | 'EXERCISE', required: Indicator of whether the data is REAL, TEST, EXERCISE, or SIMULATED data: REAL: Data collected or produced that pertains to real-world objects, events, and analysis. TEST: Specific datasets used to evaluate compliance with specifications and requirements, and for validating technical, functional, and performance characteristics. EXERCISE: Data pertaining to a government or military exercise. The data may include both real and simulated data. SIMULATED: Synthetic data generated by a model to mimic real-world datasets.
  - `createdAt` string, date-time: Time the row was created in the database, auto-populated by the system.
  - `createdBy` string: Application user who created the row in the database, auto-populated by the system.

## Other responses

- `400`: Bad Request
- `401`: Invalid/Missing User Credentials
- `403`: User Is Not Authorized
- `405`: Method Not Allowed
- `406`: MediaType Not Accepted by Request Headers
- `429`: Rate of Requests Exceeds Allowed Limit
- `500`: Internal Server Error

## Changes

> 12 revisions in range; 1 could not be searched.

- **2025-05-29** `4e1cbc17e814`: 2 info
  - added the new optional `query` request parameter `firstResult`
  - added the new optional `query` request parameter `maxResults`
- **2025-04-16** `75f764c843a9`: 2 info
  - api operation id `findAll_134` removed and replaced with ``
  - the endpoint scheme security `BasicAuth` was removed from the API

[Operation history](https://skmtc.dev/bluestaq/apis/unified-data-library-services-api/changes/udl/transponder/get.md)

---

[API](https://skmtc.dev/bluestaq/apis/unified-data-library-services-api.md) - [All operations](https://skmtc.dev/bluestaq/apis/unified-data-library-services-api/llms.txt) - [OpenAPI document](https://skmtc.dev/bluestaq/apis/unified-data-library-services-api/revisions/bd17bc53681e?raw)