Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AB9XU callsign genealogy
Currently held by Tsuruyama, 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 AB9XU's current licensee, walking backwards.
- Tsuruyama, MasanoriINgranted 2001-09-27cancelled 2010-10-26
Successor callsigns
Callsigns held now by people who previously held AB9XU.
No current licensee on record previously held this callsign.