W9LRT - FCC Callsign Database
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HamCall World-Wide Callsign Database
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Call Signs – Radio Amateurs of Canada
GitHub - tcort/callsigns: Query the Canadian Amateur Radio Callsign Database
Call signs in the United Kingdom - Wikipedia
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Callsign Database - QRZ.com
How to Find Old Amateur Radio Call Signs
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RadioQTH Amateur Radio Vanity License Search
QRZ.com question... How do I add my callsign to the database? : r/ amateurradio
US available callsigns - Resource Detail - The DXZone.com
Callsign Search on the App Store
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AE7Q's Amateur Radio Database Query Tools
Amateur Radio Call Sign Grant Date Investigation - RF Cafe
QRZ Callsign Database Search by QRZ Ham Radio
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Ham Radio Callsign Database - Scout Library - YouTube
How to Find Your Ham Radio Call Sign - dummies
