Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WP4OC callsign genealogy
Currently held by Cruz Crespo, Orlando
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 WP4OC's current licensee, walking backwards.
- Cruz Crespo, OrlandoPRgranted 2018-12-06cancelled 2019-12-31
Successor callsigns
Callsigns held now by people who previously held WP4OC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WP4OC, oldest first.
- MEDINA, SATURNINO PR1999-03-31 → cancelled 2011-04-01
- Cruz Crespo, Orlando PR2019-12-31 active