Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3SF callsign genealogy
Currently held by OLD TIMERS CLUB
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 W3SF's current licensee, walking backwards.
- COONEY JR, THOMAS DPAgranted 2000-02-04cancelled 2004-04-06
Successor callsigns
Callsigns held now by people who previously held W3SF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3SF, oldest first.
- GRAUL, THEODORE A PA1989-05-02 → cancelled 2001-05-03
- OLD TIMERS CLUB PA2001-05-22 → cancelled 2002-03-17
- COONEY JR, THOMAS D PA2024-02-21 active