Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NX1Z callsign genealogy
Currently held by NELSON, MONTE
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 NX1Z's current licensee, walking backwards.
- Fleury, John JMAgranted 2001-10-09cancelled 2003-07-09
Successor callsigns
Callsigns held now by people who previously held NX1Z.
- NELSON, MONTEAZgranted 2017-12-12
All historical holders
Every license row we've seen with the callsign NX1Z, oldest first.
- OBRIEN, JOHN J MA2023-11-07 active
- NELSON, MONTE— → cancelled 1998-03-10