Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NP4WM callsign genealogy
Currently held by MORALES LOPEZ, WILSON
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 NP4WM's current licensee, walking backwards.
- MEDINA MATIAS, WILLIAMPRgranted 2021-07-19cancelled 2022-03-18
Successor callsigns
Callsigns held now by people who previously held NP4WM.
- MORALES LOPEZ, WILSONPRgranted 2018-05-11
All historical holders
Every license row we've seen with the callsign NP4WM, oldest first.
- MORALES LOPEZ, WILSON PR2016-12-09 → cancelled 2018-05-11
- MEDINA MATIAS, WILLIAM PR2022-03-18 active