Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4BJ callsign genealogy
Currently held by ALVARADO RIVERA, VICTOR L
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 KP4BJ's current licensee, walking backwards.
- DIAZ LEBRON, ANGEL LPRgranted 1996-09-09cancelled 2005-06-10
Successor callsigns
Callsigns held now by people who previously held KP4BJ.
All historical holders
Every license row we've seen with the callsign KP4BJ, oldest first.
- ALVARADO RIVERA, VICTOR L PR1999-09-16 → cancelled 2003-02-11
- DIAZ LEBRON, ANGEL L PR2005-06-10 → cancelled 2017-06-13