Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KP4AZI callsign genealogy
Currently held by SERRA, HECTOR E
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 KP4AZI's current licensee, walking backwards.
- SERRA, HECTOR EPRgranted 2020-11-23cancelled 2020-12-11
Successor callsigns
Callsigns held now by people who previously held KP4AZI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KP4AZI, oldest first.
- SERRA, HECTOR E PR1998-12-23 → cancelled 2010-12-24
- SERRA, HECTOR E PR2020-12-11 active