| Callsign | WB6SZC |
| Radio Service | HV - Vanity |
| License Status | C - Canceled |
| Grant Date | 2009-06-13 |
| Effective Date | 2009-06-13 |
| Expire Date | 2019-07-27 |
| Cancel Date | 2017-05-06 |
| Last Action Date | 2017-05-06 |
| End Date | 2017-05-06 |
| Available Date | 2019-05-07 |
| Applicant Type | I - Individual |
| Entity Name | WILLIAMSON, ROBERT G |
| Street Address / Locality | 303 RIVERWOOD LANE RIO VISTA, CA 94571 |
| County | Solano County |
| Zip Location | 38°08'55.9"N 121°44'15.6"W |
| Maidenhead | CM98dd |
| FRN | 0001926518 |
| Licensee ID/SGIN | L00137219 / 000 |
| Licensee Class | E - Amateur Extra |
| Callsign Group | D - 2x3 |
| ULS/Geo Region | 6 / 6 / CA |
| Prev Callsign / Prev Class | KF6WXY P - Technician Plus |
| Next Callsign | WB6BB |
| Trustee Callsign / Trustee Name | |
| Vanity Type | A - Former Holder |
| ULS File Number | 0003864488 |
| Phonetic weight / Morse weight | 12 / 74 |