Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4MLC callsign genealogy
Currently held by LOPEZ RIVERA, MIGUEL A
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 KP4MLC's current licensee, walking backwards.
- LOPEZ RIVERA, MIGUEL APRgranted 2014-10-02cancelled 2016-03-12
Successor callsigns
Callsigns held now by people who previously held KP4MLC.
- LOPEZ RIVERA, MIGUEL APRgranted 2017-05-12
All historical holders
Every license row we've seen with the callsign KP4MLC, oldest first.
- ROMAN ROSARIO, CARMELO PR1999-07-09 → cancelled 2001-05-24
- LOPEZ RIVERA, MIGUEL A PR2016-03-12 → cancelled 2017-05-12