Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4DR callsign genealogy
Currently held by RIVERA, DOMINGO
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by KP4DR's current licensee, walking backwards.
- LUZARDO-MEJIAS, RAFAEL RPRgranted 2024-05-02cancelled 2026-03-20
Successor callsigns
Callsigns held now by people who previously held KP4DR.
- BARCELO CUMBA, JAIMEPRgranted 2017-07-04
All historical holders
Every license row we've seen with the callsign KP4DR, oldest first.
- BARCELO CUMBA, JAIME PR1998-09-17 → cancelled 2007-03-10
- RIVERA, DOMINGO PR2013-06-07 → cancelled 2025-06-10
- LUZARDO-MEJIAS, RAFAEL R PR2026-03-20 active