Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA4UXZ callsign genealogy
Currently held by Crisp, Russell C
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 KA4UXZ's current licensee, walking backwards.
- Chicoine, Eugene MFLgranted 2020-11-19cancelled 2025-08-08
Successor callsigns
Callsigns held now by people who previously held KA4UXZ.
- CRISP, RUSSELL CNCgranted 2021-12-29
All historical holders
Every license row we've seen with the callsign KA4UXZ, oldest first.
- Crisp, Russell C NC1997-11-04 → cancelled 2002-03-28
- Chicoine, Eugene M FL2025-08-08 active