Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0ATI callsign genealogy
Currently held by WILLIAMS, THOMAS L
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 K0ATI's current licensee, walking backwards.
- Potter, SeanCOgranted 2026-01-21cancelled 2026-05-02
Successor callsigns
Callsigns held now by people who previously held K0ATI.
- WILLIAMS, THOMAS LNDgranted 2026-01-13
All historical holders
Every license row we've seen with the callsign K0ATI, oldest first.
- WILLIAMS, THOMAS L ND1996-11-04 → cancelled 2006-03-31
- Potter, Sean CO2026-05-02 active