Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4MX callsign genealogy
Currently held by MARTINEZ, JOHN
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 N4MX's current licensee, walking backwards.
- MARTINEZ, ROGER IFLgranted 2013-01-05cancelled 2016-11-26
Successor callsigns
Callsigns held now by people who previously held N4MX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4MX, oldest first.
- MARTINEZ, JOHN FL2014-09-04 → cancelled 2016-08-23
- MARTINEZ, ROGER I FL2026-09-02 active