Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC7JU callsign genealogy
Currently held by Matsuda, Shigeki
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 AC7JU's current licensee, walking backwards.
- Matsuda, ShigekiAZgranted 2000-07-18cancelled 2000-10-11
Successor callsigns
Callsigns held now by people who previously held AC7JU.
No current licensee on record previously held this callsign.