Amateur Radio Callsign: KF4RZM
                             
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                            KF4RZM | 
                    
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                            JOHNSON, DAVID C
                             Annapolis, MD (United States)  | 
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| License Status | Active | 
|---|---|
| Operator Class | General | 
| Name | JOHNSON, DAVID C | 
| Granted | 2017-05-18 | 
| Expires | 2027-05-23 | 
| Address |