Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4ZX callsign genealogy
Currently held by LYLE III, MALCOLM H
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 K4ZX's current licensee, walking backwards.
- LYLE III, MALCOLM HVAgranted 2013-12-24cancelled 2022-11-01
Successor callsigns
Callsigns held now by people who previously held K4ZX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4ZX, oldest first.
- COPELAND, JACK AL1994-07-16 → cancelled 1996-10-14
- WATTS, CALVIN D FL2010-08-03 → cancelled 2022-10-12
- LYLE III, MALCOLM H VA2022-11-01 active