Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4KS callsign genealogy
Currently held by PASTRANA DIAZ, RAFAEL
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 KP4KS's current licensee, walking backwards.
- PASTRANA DIAZ, RAFAELPRgranted 2014-06-30cancelled 2020-02-28
Successor callsigns
Callsigns held now by people who previously held KP4KS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KP4KS, oldest first.
- ANIBARRO DIAZ, PEDRO M PR1996-09-09 → cancelled 2008-09-10
- PASTRANA DIAZ, RAFAEL PR2020-02-28 active