Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NP4WD callsign genealogy
Currently held by DELGADO NEGRON, 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 NP4WD's current licensee, walking backwards.
- DELGADO NEGRON, WILLIAMPRgranted 2018-05-07cancelled 2019-11-26
Successor callsigns
Callsigns held now by people who previously held NP4WD.
No current licensee on record previously held this callsign.