Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KZ4XQ callsign genealogy
Currently held by Malluck, Michael J
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 KZ4XQ's current licensee, walking backwards.
- Malluck, Michael JGAgranted 2025-09-23cancelled 2025-11-21
Successor callsigns
Callsigns held now by people who previously held KZ4XQ.
No current licensee on record previously held this callsign.