| Callsign | W4YBR |
|---|---|
| Radio Service | HV - Vanity |
| License Status | A - Active |
| Grant Date | 2026-05-13 |
| Effective Date | 2026-05-18 |
| Expire Date | 2036-05-10 |
| Cancel Date | |
| Last Action Date | 2026-05-18 |
| End Date | 2036-05-10 |
| Available Date | 2038-05-11 |
| Applicant Type | I - Individual |
| Entity Name | WILLIAMSON, MARK G |
| Street Address / Locality | 2009 GREENE ST APT 406 COLUMBIA, SC 292051682 |
| County | Richland County |
| Zip Location | 33°59'24.2"N 80°59'50.1"W |
| Maidenhead | EM93mx |
| FRN | 0023344658 |
| Licensee ID/SGIN | L01841702 / 000 |
| Licensee Class | T - Technician |
| Callsign Group | C - 1x3 |
| ULS/Geo Region | 4 / 4 / SC |
| Prev Callsign / Prev Class | KK4YBR |
| Next Callsign | |
| Trustee Callsign / Trustee Name | |
| Vanity Type | E - By List |
| ULS File Number | 0012031494 |
| Phonetic weight / Morse weight | 11 / 64 |
Administrative History
| Action Date | Action Type |
|---|---|
| 2016-05-10 | LIISS - License Issued |
| 2016-05-10 | VANGRT - Vanity Call Sign Assigned |
| 2026-05-13 | LIREN - License Renewed |
| 2026-05-18 | LIAUA - Administrative Update Applied |