| Callsign | WP4UEF |
| Radio Service | HA - Amateur |
| License Status | A - Active |
| Grant Date | 2026-10-27 |
| Effective Date | 2026-10-27 |
| Expire Date | 2036-10-27 |
| Cancel Date | |
| Last Action Date | 2026-10-27 |
| End Date | 2036-10-27 |
| Available Date | 2038-10-28 |
| Applicant Type | I - Individual |
| Entity Name | ANTOMPIETRI-LEON, OSVALDO J |
| Street Address / Locality | 6 CALLE LOS SANTOS COTO LAUREL PONCE, PR 00780 |
| County | Ponce Municipio |
| Zip Location | 18°06'10.2"N 66°34'05.2"W |
| Maidenhead | FK68rc |
| FRN | 0038933016 |
| Licensee ID/SGIN | L03096163 / 000 |
| Licensee Class | T - Technician |
| Callsign Group | D - 2x3 |
| ULS/Geo Region | 12 / 12 / PR |
| Prev Callsign / Prev Class | |
| Next Callsign | |
| Trustee Callsign / Trustee Name | |
| Vanity Type | |
| ULS File Number | |
| Phonetic weight / Morse weight | 13 / 66 |