Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4ZFH callsign genealogy
Currently held by Waters, Thomas F
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 W4ZFH's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W4ZFH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4ZFH, oldest first.
- Waters, Thomas F VA2004-02-25 → cancelled 2006-03-11
- Garton, John M TX2019-02-02 active