Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC7BK callsign genealogy
Currently held by YOSHINAGA, KAZUYOSHI
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 AC7BK's current licensee, walking backwards.
- Calvery, Brian KWAgranted 2016-11-02cancelled 2016-11-22
Successor callsigns
Callsigns held now by people who previously held AC7BK.
- YOSHINAGA, KAZUYOSHINVgranted 2019-10-03
All historical holders
Every license row we've seen with the callsign AC7BK, oldest first.
- YOSHINAGA, KAZUYOSHI AZ1999-07-27 → cancelled 1999-11-27
- Calvery, Brian K WA2026-09-01 active