Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB9TZU callsign genealogy
Currently held by Casey, Matt A
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 KB9TZU's current licensee, walking backwards.
- CASEY, MATT AILgranted 2019-02-09cancelled 2020-02-04
Successor callsigns
Callsigns held now by people who previously held KB9TZU.
- CASEY, MATT AILgranted 2019-02-09cancelled 2020-02-04
All historical holders
Every license row we've seen with the callsign KB9TZU, oldest first.
- CASEY, MATT A IL2018-12-27 → cancelled 2019-02-09
- Casey, Matt A IL2020-02-04 active