Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB0HR callsign genealogy
Currently held by WATANABE, KOJI
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 AB0HR's current licensee, walking backwards.
- WATANABE, KOJIcancelled 1998-06-03
Successor callsigns
Callsigns held now by people who previously held AB0HR.
No current licensee on record previously held this callsign.