🛟 OHB — Open HamClock Backend

When the original backend went dark, the clocks didn’t have to.

Open-source, self-hostable backend replacement for HamClock — restoring live propagation data, maps, and feeds.

Drop-in compatible with existing HamClock clients — no firmware changes required.

OHB provides faithful replacements for the data feeds and map assets that HamClock depends on — built by operators, for operators.

This project is not affiliated with HamClock or its creator, Elwood Downey, WB0OEW. We extend our sincere condolences to the Downey family.

✨ What OHB Does

• Rebuilds HamClock dynamic text feeds (solar, geomag, DRAP, PSK, RBN, WSPR, Amateur Satellites, DxNews, Contests, etc)
• Generates map overlays (MUF-RT, DRAP, Aurora, Wx-mB, etc.)
• Produces zlib-compressed BMP assets in multiple resolutions
• Designed for Raspberry Pi, cloud, or on-prem deployment
• Fully open source and community maintained

🧭 Architecture

[ NOAA / KC2G / PSK / SWPC ]
              |
              v
        +-------------+
        |     OHB     |
        |-------------|
        | Python/Perl|
        | GMT/Maps   |
        | Cron Jobs  |
        +-------------+
              |
           HTTP/ZLIB
              |
         +----------+
         | lighttpd |
         +----------+
              |
         +----------+
         | HamClock |
         +----------+

💬 Join us on Discord

We are building a community-powered backend to keep HamClock running.
Discord is where we can collaborate, troubleshoot, and exchange ideas — no RF license required 😎
https://discord.gg/wb8ATjVn6M

OHB in Production (Live HamClock Clients)

🚀 Quick Start 👉 Quick Start Guide

📦 Installation 👉 Detailed installation instructions

📊 Project Completion Status

OHB targets ~40+ HamClock artifacts (feeds, maps, and endpoints).

As of today:

• All core dynamic maps implemented
• All text feeds replicated
• Amateur satellites with fresh TLEs
• RSS feed works for thousands for clients
• Integration-tested on live HamClock clients
• Remaining work focused on VOACAP + RBN endpoints

👉 Full artifact tracking and integration status: PROJECT_STATUS.md

📚 Data Attribution 👉 Attribution

🤝 Contributing