Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4GMH callsign genealogy
Currently held by Howard, George 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 W4GMH's current licensee, walking backwards.
- Zethmayr, Cullen KFLgranted 2007-01-24cancelled 2007-02-16
Successor callsigns
Callsigns held now by people who previously held W4GMH.
- Howard, George MAKgranted 2011-09-22cancelled 2017-02-24
All historical holders
Every license row we've seen with the callsign W4GMH, oldest first.
- Howard, George M AL2000-10-28 → cancelled 2001-03-17
- Zethmayr, Cullen K FL2017-08-01 active