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Callsign Database by QRZ.COM

- qrz.com

World's leading amateur radio callsign database news, technical articles, QSL routes, online Logbook, discussion forums, practice licence exam tests, and technical data about...

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QRZCQ - The database for radio hams

- qrzcq.com

QRZCQ / The database for radio hams / Ham radio call database for everyone

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