Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4MTH callsign genealogy
Currently held by HARRELSON, MICHAEL T
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 W4MTH's current licensee, walking backwards.
- HARRELSON, MICHAEL TNCgranted 2021-06-14cancelled 2021-07-02
Successor callsigns
Callsigns held now by people who previously held W4MTH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4MTH, oldest first.
- GARDNER, LEWIS L FL2006-06-16 → cancelled 2018-06-29
- HARRELSON, MICHAEL T NC2021-07-02 active