Offline ham Lookup

Offline ham Lookup is a fast, fully offline callsign lookup tool built for licensed amateur radio operators no account, no subscription, and no internet connection required.

Search any US or Canadian amateur radio callsign and instantly see the operator's name, town, and state or province sourced from public FCC and ISED licensing records covering both countries. Everything is bundled right on your device, so it works exactly the same whether you're at home, in the field, or somewhere with zero signal. updated dataset 2x a year

Set your own location once (by GPS or by entering your grid square manually), and Offline ham Lookup will show you the distance and compass bearing to any callsign you look up in both miles and kilometers. You can also look up a grid square or a set of coordinates directly, handy any time you're given a location over the air and need to know where it actually is relative to you. based on there public zip code.

Key features:

Instant offline callsign search across US and Canadian licensing data
Distance and bearing to any operator, from your set location
Grid square and latitude/longitude lookup
Interactive map view showing your location and any looked-up point
Favorite callsigns for quick access later
Light and dark mode

Built with privacy in mind: operators' exact street addresses are never published only town and zip/postal code, enough to be useful without exposing anyone's precise home address. The app makes no network calls, collects no personal data, and doesn't require an account of any kind.

Whether you're active in ARES, RACES, SKYWARN, POTA, SOTA, or just chasing contacts from your home station, Offline ham Lookup is built to be a quick, reliable companion that works no matter where you are.

Have feedback or find a bug? Use the "Send Feedback" option right in the app we read every message.