Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NP4DT callsign genealogy
Currently held by De Leon-Diaz, Nelson
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 NP4DT's current licensee, walking backwards.
- De Leon-Diaz, NelsonPRgranted 2019-02-27cancelled 2019-03-22
Successor callsigns
Callsigns held now by people who previously held NP4DT.
- De Leon-Diaz, NelsonPRgranted 2020-07-24