Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4GMT callsign genealogy
Currently held by HARMON, WILLIAM R
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 W4GMT's current licensee, walking backwards.
- DOBBS, STEVEN LVAgranted 2006-10-05cancelled 2011-02-25
Successor callsigns
Callsigns held now by people who previously held W4GMT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4GMT, oldest first.
- HARMON, WILLIAM R FL1997-10-29 → cancelled 2009-10-30
- DOBBS, STEVEN L NC2020-12-03 active