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Callook API

The go-to source for Amateur Radio callsign data

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This API is best for obtaining Amateur Radio data from callsigns, QSL info, and lookup results

The Callook API is ideal for developers seeking data quickly, accurately, and reliably. Plugging this API into an application can allow developers to gain access to a wide variety of data connected to amateur radio and callsign operations. With this API, it is easy to create applications that analyse callsign data and also create applications that stream live callsign data.

Key features

  • ✓Searchable data from the FCC database
  • ✓over 30+ custom fields from the Callook database
  • ✓lookup any callsign worldwide
  • ✓real-time geocoding for callsigns

Use case ideas

Radio Transceiver

Create a device that can detect active amateur radio transmissions, look up any callsign transmitted, and analyze callsign data.

Callsign Heatmap

Analyze and visualize callsign data to produce a heatmap of amateur radio callsigns logged in a specific region.

Amateur Radio Search Engine

Create an online service that uses callsign data and a search algorithm to quickly and accurately inform users about what’s happening on the amateur radio waves.

Callook API has been the go-to source for us for Amateur Radio data; it has saved us a significant amount of time and hassle in our work.
— a happy developer

Related technologies

FCC APIHamQTH API