Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1OFS callsign genealogy
Currently held by STYS, JOHN 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 W1OFS's current licensee, walking backwards.
- Stys, John CILgranted 2009-09-17cancelled 2015-10-27
Successor callsigns
Callsigns held now by people who previously held W1OFS.
- STYS, JOHN CILgranted 2024-01-20