Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6SFD callsign genealogy
Currently held by Stockton Fire Department Amateur Radio 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 W6SFD's current licensee, walking backwards.
- KM6JBHcancelledStockton Fire Department Amateur Radio ClubCAgranted 2017-03-13cancelled 2017-04-14
Successor callsigns
Callsigns held now by people who previously held W6SFD.
No current licensee on record previously held this callsign.