WH6DUO — Castle Medical Center Amateur Radio Club
| Callsign | WH6DUO |
| Name | Castle Medical Center Amateur Radio Club |
| Location | Kailua, Hawaii |
| Grid square | BL01xo |
| CQ zone | 3 |
| Granted | 06/07/2021 |
| Expires | 08/30/2031 |
From the FCC Universal Licensing System. Search another callsign above.
About This Database
This database contains all active FCC-licensed amateur radio operators in the United States, sourced directly from the FCC Universal Licensing System (ULS). Data includes callsign, operator name, license class (Technician, General, Advanced, Extra), location, and license expiration date. Updated weekly. No registration or account required — just type a callsign and search.
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