Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6SIM callsign genealogy
Currently held by Rosanka, Simon
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 W6SIM's current licensee, walking backwards.
- Rosanka, SimonCAgranted 2023-07-25cancelled 2023-12-30
Successor callsigns
Callsigns held now by people who previously held W6SIM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W6SIM, oldest first.
- FARRIS, CHARLES R TX1996-09-13 → cancelled 2008-09-16
- Rosanka, Simon CA2023-12-30 active