Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NP4S callsign genealogy
Currently held by ORTIZ, EDGARDO
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 NP4S's current licensee, walking backwards.
- WP4NUEcancelledAMSAT Puerto RicoPRgranted 2007-04-03cancelled 2007-04-24
Successor callsigns
Callsigns held now by people who previously held NP4S.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NP4S, oldest first.
- ORTIZ, EDGARDO PR1997-04-17 → cancelled 2002-03-31
- AMSAT Puerto Rico PR2017-07-06 active