Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WP4PD callsign genealogy
Currently held by TIRADO, LIONEL
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 WP4PD's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held WP4PD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WP4PD, oldest first.
- SEPULVEDA MOAR, ANNABEL PR1998-06-02 → cancelled 2010-06-03
- TIRADO, LIONEL PR2020-04-21 active