Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WP4CD callsign genealogy
Currently held by Rodriguez-Mojica, William
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 WP4CD's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held WP4CD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WP4CD, oldest first.
- DELGADO SR, IRAEL PR1987-09-01 → cancelled 1999-09-02
- Rodriguez-Mojica, William PR2025-01-15 active