Confidence: Medium · Source: FCC ULS · As of 2026-09-15
W4GMJ callsign genealogy
Currently held by JOHNSON, GREGORY M
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 W4GMJ's current licensee, walking backwards.
- JOHNSON, GREG MGAgranted 2010-07-20cancelled 2010-09-21
Successor callsigns
Callsigns held now by people who previously held W4GMJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4GMJ, oldest first.
- PATRICK, LE ROY G FL1988-02-23 → cancelled 2000-02-24
- JOHNSON, GREGORY M GA2020-07-11 active