Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4OZ callsign genealogy
Currently held by DIAZ, HECTOR M
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 KP4OZ's current licensee, walking backwards.
- Sanchez, OrlandoPRgranted 2023-03-03cancelled 2023-05-23
Successor callsigns
Callsigns held now by people who previously held KP4OZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KP4OZ, oldest first.
- DIAZ, HECTOR M PR2008-05-29 → cancelled 2020-04-10
- Sanchez, Orlando PR2023-05-23 active