Amateur Radio Callsign: KF6STK
                             
                         | 
                        
                            KF6STK | 
                    
| 
                            MARQUARDT, WILLIAM E
                             SAN FRANCISCO, CA (United States)  | 
                    |
| License Status | Active | 
|---|---|
| Operator Class | Amateur Extra | 
| Name | MARQUARDT, WILLIAM E | 
| Granted | 2018-06-21 | 
| Expires | 2028-09-08 | 
| Address |