Operator Tools

Look Up Any Ham Radio Callsign

Search over 800,000 active FCC-licensed amateur radio operators by callsign, name, or city. Free, fast, and always up to date.

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Operator Details

Name, location, and mailing city for every licensed amateur radio operator in the FCC database.

License Information

License class, current record grant date, expiration date, and status from the FCC ULS record.

Grid Square

Approximate Maidenhead grid square derived from the FCC mailing ZIP centroid and clearly labeled as an estimate.

FCC Record Source

License fields are sourced from the FCC ULS public record, with derived values identified separately.

Station Profiles

Claimed operators can add their station details including equipment, bands, and operating modes to their profile.

Always Up to Date

All data is sourced from the FCC Universal Licensing System and updated regularly to reflect new grants, renewals, and changes.

1

Search

Enter a callsign, name, or city into the search bar. Results appear instantly as you type.

2

View Details

Click any result to see the full operator profile: license class, location, grid square, grant and expiration dates, and more.

3

Claim Your Profile

If you find your own callsign, claim it to add your station details, equipment, bands, and operating modes to your public profile.

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Claim your callsign

Found yourself in the database? Claim your callsign to create a public profile with your station details, equipment, bands, and operating modes. It is free and takes less than a minute.

Find Your Callsign

What is a ham radio callsign?

A ham radio callsign is a unique identifier assigned by the FCC to licensed amateur radio operators in the United States. It consists of a prefix, a numeral historically associated with a call area, and a suffix. Vanity callsigns mean the numeral does not establish an operator's current location.

How do I look up a ham radio license?

Use the Groundwave callsign lookup to search by callsign, name, or city. License fields come from the FCC Universal Licensing System (ULS). Groundwave derives an approximate grid square from the FCC mailing ZIP centroid and labels it accordingly. Visit the search page and start typing.

Is this data official?

Groundwave sources all amateur license data from the FCC Universal Licensing System (ULS), which is the official public database of record for amateur radio licenses in the United States. The data is updated regularly to reflect new grants, renewals, and cancellations.

How do I claim my callsign on Groundwave?

Create a Groundwave account, find your active individual callsign, and click "Claim" to link it to your profile. A separate vouch or administrative review marks the claim verified.

Is this free?

Yes. Callsign lookup on Groundwave is completely free with no account required. You can search, view operator details, and browse by state at no cost. Claiming your callsign is also free.

Search 800,000+ licensed operators

Find any amateur radio operator by callsign, name, or city. Free, fast, and always current.

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Questions? hello@groundwavehq.com