Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AH0J callsign genealogy
Currently held by YOSHINUMA, KATSUMI
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 AH0J's current licensee, walking backwards.
- YOSHINUMA, KATSUMIMPgranted 2006-05-09cancelled 2006-07-11
Successor callsigns
Callsigns held now by people who previously held AH0J.
No current licensee on record previously held this callsign.