Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC4ZYO callsign genealogy
Currently held by WHITE, BRIAN M
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 KC4ZYO's current licensee, walking backwards.
- WHITE, BRIAN MNCgranted 2019-03-11cancelled 2019-04-02
Successor callsigns
Callsigns held now by people who previously held KC4ZYO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC4ZYO, oldest first.
- WHITE, BRIAN M NC1992-04-28 → cancelled 2004-04-29
- WHITE, BRIAN M NC2019-04-02 active