| Callsign | KP4ABG |
| Radio Service | HA - Amateur |
| License Status | E - Expired |
| Grant Date | 1997-12-17 |
| Effective Date | 2001-11-05 |
| Expire Date | 2007-12-17 |
| Cancel Date | 2009-12-18 |
| Last Action Date | 2009-12-18 |
| End Date | 2007-12-17 |
| Available Date | 2010-01-18 |
| Applicant Type | I - Individual |
| Entity Name | Martinez Umpierre, Rafael R |
| Street Address / Locality | PO Box 13559 San Juan, PR 009083559 |
| County | |
| Zip Location | |
| Maidenhead | |
| FRN | 0001843283 |
| Licensee ID/SGIN | L00208816 / 000 |
| Licensee Class | G - General |
| Callsign Group | D - 2x3 |
| ULS/Geo Region | 12 / 12 / PR |
| Prev Callsign / Prev Class | P - Technician Plus |
| Next Callsign | |
| Trustee Callsign / Trustee Name | |
| Vanity Type | |
| ULS File Number | 9712150906 |
| Phonetic weight / Morse weight | 11 / 72 |