Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WT4S callsign genealogy
Currently held by TILLETT, WILLIAM D
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 WT4S's current licensee, walking backwards.
- Ipock, Adam FNCgranted 2000-08-01cancelled 2005-02-01
Successor callsigns
Callsigns held now by people who previously held WT4S.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WT4S, oldest first.
- TILLETT, WILLIAM D KY1993-01-12 → cancelled 2005-01-13
- Ipock, Adam F NC2025-01-09 active