Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC5TB callsign genealogy
Currently held by MOROSAWA, KATSUHIKO
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 AC5TB's current licensee, walking backwards.
- MOROSAWA, KATSUHIKOcancelled 1999-08-05
Successor callsigns
Callsigns held now by people who previously held AC5TB.
No current licensee on record previously held this callsign.