Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AH7DX callsign genealogy
Currently held by YOSHIZUMI, NORIYUKI
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 AH7DX's current licensee, walking backwards.
- YOSHIZUMI, NORIYUKIHIgranted 1999-05-20cancelled 2003-06-14
Successor callsigns
Callsigns held now by people who previously held AH7DX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AH7DX, oldest first.
- AMERICAN RED CROSS HAWAII STATE CHAPTER ARC NV1997-04-01 → cancelled 2001-02-05
- YOSHIZUMI, NORIYUKI CA2023-08-29 active