Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6OSS callsign genealogy
Currently held by GRILLO, JAMES F
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 W6OSS's current licensee, walking backwards.
- GOSS III, JOHN BCAgranted 2015-11-25cancelled 2016-04-02
Successor callsigns
Callsigns held now by people who previously held W6OSS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W6OSS, oldest first.
- GRILLO, JAMES F CA1995-04-20 → cancelled 2007-04-21
- GOSS III, JOHN B NC2026-03-19 active