Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC7JZ callsign genealogy
Currently held by Kooiman, William C
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 AC7JZ's current licensee, walking backwards.
- KOOIMAN, WILLIAM CWAgranted 2000-03-24cancelled 2000-10-24
- KA0IVAno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held AC7JZ.
- Kooiman, William CCAgranted 2020-12-15