HamOrbit is a free Windows desktop app for amateur radio operators. Logbook, satellite passes, world clocks, contest calendar, awards tracker — all in one window. Built by an active operator (EA4FMM).
No bloat, no upsell, no subscription. Just the tools you reach for every time you sit down at the rig.
Log QSOs in seconds. Import your existing ADIF from any logger. Search, filter, and export anytime — your data stays on your disk.
SGP4 propagation with CelesTrak TLEs. See the next AOS/LOS for ISS, AO-91, SO-50, the QO-100 footprint and dozens more.
Half a dozen DX-friendly cities side by side. Grey line indicator so you know when 80 m is going to open to the antipodes.
DXCC, WAS, WAZ, IOTA, SOTA — progress bars and "what's missing" lists pulled straight from your logbook.
Upcoming HF and VHF contests at a glance. CQ WW, ARRL DX, IARU, WPX — never miss the start of a serious weekend.
Single-keystroke logging during runs. Save common exchanges as macros for SSB / CW / digital modes.
SFI, A, K and MUF/foF2 from NOAA. Quick visual of which bands are actually worth turning the rig on for.
Generate printable QSL cards from your logbook. Track which contacts you've already confirmed via LoTW, eQSL or paper.
SQLite database in %APPDATA%. No cloud account, no telemetry, no ads inside the app. Your log is yours.
Real screenshots from the current build. No mockups, no AI-generated UI.
No account, no setup wizard, no "verify your email". Install and go.
One .exe file, ~12 MB. Signed where possible. Hosted on GitHub Releases — same place a thousand other open-source ham tools live.
Standard Windows installer. Picks a sane default folder. Creates a local SQLite database under %APPDATA%\HamOrbit. That's it.
Drag your ADIF in. Hundreds of QSOs imported in a few seconds. Or start fresh — first QSO logged in under a minute.
The fastest QSO logger we could build. Tab through fields. Keyboard-only flow for serious operating sessions. Sane defaults so 90% of contacts need only a callsign and a band.
Pulls TLEs from CelesTrak once a day and caches them locally. Computes passes with the same SGP4 algorithm used by every serious tracker — so the numbers match Gpredict, ISS Tracker, and N2YO.
The awards tab reads your logbook and answers the question every operator asks: which entities am I still missing? Plus a handful of charts that are actually useful — band activity by hour, QSOs per month, mode mix over the years.
Honest checklist against the loggers most operators have tried.
| Feature | HamOrbit | HRD Free | Log4OM | Generic web logger |
|---|---|---|---|---|
| Free, no subscription | Yes | Trial only | Yes | Limited tier |
| Local-first (works offline) | Yes | Yes | Yes | No |
| Built-in satellite tracker | Yes | No | No | No |
| Awards progress at a glance | Yes | Partial | Yes | Partial |
| World clocks & grey line | Yes | No | No | No |
| Modern UI built this decade | Yes | No | Updated | Yes |
| Installer under 20 MB | Yes | No | No | N/A |
Free during beta. Paid tiers are paused until the Free version proves itself with real operators.
If something is missing here, just email hello@hamorbit.com.
Yes — the Free tier is fully usable and unlimited. There is no trial timer. Paid tiers exist in the roadmap but are closed until the Free version proves itself with real users.
Right now it's Windows-only. macOS and Linux builds are on the roadmap once the codebase stabilises. If you want to be notified, drop your email in the newsletter above.
In a local SQLite file at %APPDATA%\HamOrbit\hamorbit.db. Nothing is uploaded anywhere. You can copy that file to back it up, or export to ADIF anytime.
Not in the Free tier yet — CAT (Hamlib bridge) is planned for the Plus tier. The current Free build is focused on logging, propagation, satellites and awards.
Yes. HamOrbit reads standard ADIF (versions 3.0 and up). Tested against exports from N1MM, Log4OM, Ham Radio Deluxe, QRZ.com and LoTW. Hundreds of QSOs import in seconds.
No. The desktop app makes outbound requests only to fetch satellite TLEs (CelesTrak) and solar data (NOAA). Your logbook never leaves your disk unless you export it manually.
One licensed amateur radio operator (callsign EA4FMM) building it solo. No company, no investors, no growth team.
One installer. Twelve megabytes. No account, no credit card, no email required. Just download and run.
⬇ Download HamOrbit for Windows