Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KZ4ZX callsign genealogy
Currently held by Carmichael II, Malcolm S
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 KZ4ZX's current licensee, walking backwards.
- Carmichael II, Malcolm SNCgranted 2025-07-29cancelled 2026-02-23
Successor callsigns
Callsigns held now by people who previously held KZ4ZX.
No current licensee on record previously held this callsign.