Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NT4AA callsign genealogy
Currently held by Oshika, Kazuhiro
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 NT4AA's current licensee, walking backwards.
- Oshika, KazuhiroHIgranted 2016-07-27cancelled 2016-08-16
Successor callsigns
Callsigns held now by people who previously held NT4AA.
No current licensee on record previously held this callsign.