Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AB7ZJ callsign genealogy
Currently held by MATSUYAMA, MASANORI
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 AB7ZJ's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held AB7ZJ.
- MATSUYAMA, MASANORIAZgranted 2018-09-05