Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB4ZS callsign genealogy
Currently held by MATSUSHIBA, TAKUJI
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 AB4ZS's current licensee, walking backwards.
- KC4SREno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held AB4ZS.
- MATSUSHIBA, TAKUJITXgranted 2020-10-15