Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA1Z callsign genealogy
Currently held by Fukuda, Hiromichi
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 KA1Z's current licensee, walking backwards.
- Fukuda, HiromichiCTgranted 2007-02-09cancelled 2007-03-03
Successor callsigns
Callsigns held now by people who previously held KA1Z.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA1Z, oldest first.
- MC MAHON, WILLIAM G CT1995-06-14 → cancelled 2003-07-23
- Fukuda, Hiromichi CT2017-01-04 active