Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WP4JD callsign genealogy
Currently held by DANIA, JUAN
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 WP4JD's current licensee, walking backwards.
- Dania - Pineda, JuanPRgranted 2019-05-08cancelled 2019-06-21
Successor callsigns
Callsigns held now by people who previously held WP4JD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WP4JD, oldest first.
- NUNEZ ARROYO, FELIX PR1997-04-11 → cancelled 2009-04-14
- DANIA, JUAN PR2019-06-21 active