Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1WTF callsign genealogy
Currently held by Williams, Stephen C
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 W1WTF's current licensee, walking backwards.
- Harris, Brian EORgranted 2006-05-23cancelled 2010-04-09
Successor callsigns
Callsigns held now by people who previously held W1WTF.
- Williams, Stephen CCOgranted 2007-09-11cancelled 2016-11-11
All historical holders
Every license row we've seen with the callsign W1WTF, oldest first.
- RUMMELL, GEORGE C MA1991-01-15 → cancelled 2003-01-16
- Williams, Stephen C AR2007-05-30 → cancelled 2007-09-11
- Harris, Brian E OR2020-02-19 active