Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KP4PK callsign genealogy
Currently held by HERNANDEZ-JIMENEZ, GREG
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 KP4PK's current licensee, walking backwards.
- HERNANDEZ-JIMENEZ, GREGPRgranted 2011-12-01cancelled 2021-05-04
Successor callsigns
Callsigns held now by people who previously held KP4PK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KP4PK, oldest first.
- JUARBE DIAZ, MAXIMILIANO C PR1998-03-02 → cancelled 2010-03-03
- HERNANDEZ-JIMENEZ, GREG PR2021-05-04 active