Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6FFF callsign genealogy
Currently held by VISTA VALLEY FISTS CW 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 K6FFF's current licensee, walking backwards.
- Furst, HCAgranted 2021-08-10cancelled 2021-08-31
Successor callsigns
Callsigns held now by people who previously held K6FFF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6FFF, oldest first.
- VISTA VALLEY FISTS CW CLUB CA2008-08-09 → cancelled 2020-08-11
- Furst, H CA2021-08-31 active