Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KX4YZ callsign genealogy
Currently held by Prat, Irenee
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 KX4YZ's current licensee, walking backwards.
- Brown, RobertALgranted 2023-01-21cancelled 2023-05-02
Successor callsigns
Callsigns held now by people who previously held KX4YZ.
- Prat, IreneeNCgranted 2020-07-11
All historical holders
Every license row we've seen with the callsign KX4YZ, oldest first.
- Prat, Irenee NC2020-06-22 → cancelled 2020-07-11
- Brown, Robert M AL2023-05-02 active