Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NI5U callsign genealogy
Currently held by ELMS, LEON
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 NI5U's current licensee, walking backwards.
- Castillo 324, CarlosNMgranted 2017-02-23cancelled 2020-02-19
Successor callsigns
Callsigns held now by people who previously held NI5U.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NI5U, oldest first.
- ELMS, LEON TX2007-11-07 → cancelled 2020-01-28
- Castillo 324, Carlos NM2020-02-19 active