Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WP4DT callsign genealogy
Currently held by Osuba-Acosta, Jose L
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 WP4DT's current licensee, walking backwards.
- Osuba-Acosta, Jose LPRgranted 2009-11-04cancelled 2011-02-05
Successor callsigns
Callsigns held now by people who previously held WP4DT.
- Osuba, jose LPRgranted 2020-04-10
All historical holders
Every license row we've seen with the callsign WP4DT, oldest first.
- SANCHEZ, ELSA P PR1997-01-15 → cancelled 2009-01-16
- Osuba-Acosta, Jose L PR2011-02-05 → cancelled 2020-04-10