Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4AN callsign genealogy
Currently held by FITZWILLIAM, JAMES P
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 KP4AN's current licensee, walking backwards.
- CASANAS SR, JUAN APRgranted 2003-12-18cancelled 2011-06-07
Successor callsigns
Callsigns held now by people who previously held KP4AN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KP4AN, oldest first.
- FITZWILLIAM, JAMES P FL1987-11-03 → cancelled 1999-11-04
- CASANAS SR, JUAN A PR2021-03-31 active