| Callsign | WP4MZJ |
| Radio Service | HA - Amateur |
| License Status | E - Expired |
| Grant Date | 1995-06-07 |
| Effective Date | 1995-06-07 |
| Expire Date | 2005-06-07 |
| Cancel Date | 2007-06-08 |
| Last Action Date | 2007-06-08 |
| End Date | 2005-06-07 |
| Available Date | 2007-07-09 |
| Applicant Type | I - Individual |
| Entity Name | COLON MARTINEZ, ALFREDO S |
| Street Address / Locality | CALLE MIMOSA 201 RIO PIEDRAS, PR 00927 |
| County | San Juan Municipio |
| Zip Location | 18°23'16.8"N 66°04'19.5"W |
| Maidenhead | FK68xj |
| FRN | |
| Licensee ID/SGIN | / 000 |
| Licensee Class | P - Technician Plus |
| 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 | 9506078932 |
| Phonetic weight / Morse weight | 12 / 80 |