Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4MMX callsign genealogy
Currently held by BROWN, ROBERT A
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 N4MMX's current licensee, walking backwards.
- BROWN, ROBERT AVAgranted 2020-07-28cancelled 2020-12-08
Successor callsigns
Callsigns held now by people who previously held N4MMX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4MMX, oldest first.
- LAWRENCE, FAY A SC1999-01-21 → cancelled 2011-01-22
- BROWN, ROBERT A VA2020-12-08 active