Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W6SFI callsign genealogy
Currently held by MONROE, 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 W6SFI's current licensee, walking backwards.
- Monroe, Anthony SCAgranted 2015-11-24cancelled 2015-12-18
Successor callsigns
Callsigns held now by people who previously held W6SFI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W6SFI, oldest first.
- MONROE, STEPHEN C CA1995-03-31 → cancelled 2007-04-03
- Monroe, Anthony S CA2025-11-21 active