Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9KAZ callsign genealogy
Currently held by Kitajo, Masakazu
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 W9KAZ's current licensee, walking backwards.
- Kitajo, MasakazuNJgranted 2023-09-13cancelled 2023-10-17
Successor callsigns
Callsigns held now by people who previously held W9KAZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9KAZ, oldest first.
- Kaczmarek, Christopher M WI2006-03-18 → cancelled 2018-03-20
- Kitajo, Masakazu NJ2023-10-17 active