Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N6SFI callsign genealogy
Currently held by GREGOIRE, MARIO J
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 N6SFI's current licensee, walking backwards.
- KO6IQAcancelledSTARFLEET AMATEUR RADIO GROUPCAgranted 2025-03-28cancelled 2025-04-15
Successor callsigns
Callsigns held now by people who previously held N6SFI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N6SFI, oldest first.
- GREGOIRE, MARIO J CA1989-01-17 → cancelled 2001-01-18
- STARFLEET AMATEUR RADIO GROUP CA2025-04-15 active