| Callsign | KO4YUM |
|---|---|
| Radio Service | HA - Amateur |
| License Status | A - Active |
| Grant Date | 2022-03-21 |
| Effective Date | 2025-12-18 |
| Expire Date | 2032-03-21 |
| Cancel Date | |
| Last Action Date | 2025-12-18 |
| End Date | 2032-03-21 |
| Available Date | 2034-03-22 |
| Applicant Type | I - Individual |
| Entity Name | ROBERTSON, TOBIAS B |
| Street Address / Locality | 507 Whoopers Lp Uhland, TX 78640 |
| County | Hays County |
| Zip Location | 29°59'56.8"N 97°49'41.6"W |
| Maidenhead | EL19cx |
| FRN | 0032117368 |
| Licensee ID/SGIN | L02538731 / 000 |
| Licensee Class | G - General |
| Callsign Group | D - 2x3 |
| ULS/Geo Region | 4 / 5 / TX |
| Prev Callsign / Prev Class | |
| Next Callsign | |
| Trustee Callsign / Trustee Name | |
| Vanity Type | |
| ULS File Number | 0009962597 |
| Phonetic weight / Morse weight | 12 / 76 |
Administrative History
| Action Date | Action Type |
|---|---|
| 2022-03-21 | SYSGRT - New Systematic Call Sign Assigned |
| 2022-03-21 | LIISS - License Issued |
| 2023-05-19 | LIAUA - Administrative Update Applied |
| 2023-11-21 | LIAUA - Administrative Update Applied |
| 2025-12-18 | LIAUA - Administrative Update Applied |