Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4AW callsign genealogy
Currently held by DIAZ DIAZ, ILDEFONSO
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 KP4AW's current licensee, walking backwards.
- WP4PEYcancelledARRL Puerto Rico Section Convention IncPRgranted 2014-07-31cancelled 2014-09-20
Successor callsigns
Callsigns held now by people who previously held KP4AW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KP4AW, oldest first.
- DIAZ DIAZ, ILDEFONSO PR1998-09-10 → cancelled 2010-09-11
- ARRL Puerto Rico Section Convention Inc PR2014-09-20 active