Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KP4RBR callsign genealogy
Currently held by BETANCOURT, RODOLFO
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 KP4RBR's current licensee, walking backwards.
- BETANCOURT, RODOLFOPRgranted 2016-01-05cancelled 2020-03-27
Successor callsigns
Callsigns held now by people who previously held KP4RBR.
- BONILLA RAMOS, RADAMESPRgranted 2026-01-21
All historical holders
Every license row we've seen with the callsign KP4RBR, oldest first.
- BONILLA RAMOS, RADAMES PR2013-12-07 → cancelled 2016-02-09
- BETANCOURT, RODOLFO PR2020-03-27 active