OHB – replacement backend for HamClock

Open HamClock Backend (OHB) is a self-hosted replacement backend for HamClock. It recreates the server-side services the HamClock client expects, allowing operators and groups to run the infrastructure themselves rather than depend on a single public backend.

OHB follows the HamClock Standards and generates its maps, feeds and other data products from publicly documented upstream sources. It can be deployed on modest Linux hardware, including Raspberry Pi-class systems, as well as virtual machines and larger servers. This keeps the backend inspectable, configurable and under the operator’s control.

This is free and open source software.

Key Features

  • Implements the HamClock Standards for compatibility with supported HamClock clients.
  • Generates propagation information and map assets locally on the host system.
  • Produces weather, cloud, aurora, DRAP, MUF, terrain, country and solar imagery.
  • Serves space-weather data including X-ray, solar flux, sunspot, geomagnetic and solar-wind information.
  • Provides endpoints for weather, IP geolocation, band conditions, VOACAP, PSK Reporter, WSPR and Reverse Beacon Network data.
  • Supplies contest, DXpedition and on-the-air spotting information used by HamClock displays.
  • Runs scheduled jobs to fetch upstream information and regenerate backend artefacts automatically.
  • Supports independent and federated deployments, reducing reliance on a single central service.
  • Can run on small Linux systems as well as conventional servers and virtual machines.

Website: github.com/openhamclock/open-hamclock-backend
Support:
Developer: Dave Koberstein
License: GNU Affero General Public License v3.0

OHB is written in Python, Shell and Perl. Learn Python with our recommended free books and free tutorials. Learn Perl with our recommended free books and free tutorials.


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