Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WP4TX callsign genealogy
Currently held by DE HOYOS MALDONADO, FERMIN
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 WP4TX's current licensee, walking backwards.
- DE HOYOS MALDONADO, FERMINPRgranted 2010-06-17cancelled 2010-11-05
Successor callsigns
Callsigns held now by people who previously held WP4TX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WP4TX, oldest first.
- ACEVEDO, FELIX PR1989-02-14 → cancelled 2001-02-15
- DE HOYOS MALDONADO, FERMIN FL2021-07-27 active