Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KZ4XI callsign genealogy
Currently held by Nichols, Mike 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 KZ4XI's current licensee, walking backwards.
- Nichols, Mike CGAgranted 2023-02-14cancelled 2025-11-19
Successor callsigns
Callsigns held now by people who previously held KZ4XI.
No current licensee on record previously held this callsign.