Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4LLX callsign genealogy
Currently held by Player, Donald 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 K4LLX's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K4LLX.
- Player, Donald JSCgranted 2024-05-31
All historical holders
Every license row we've seen with the callsign K4LLX, oldest first.
- COX SR, PAUL W NC1993-05-11 → cancelled 2005-05-12
- Player, Donald J SC2019-07-26 → cancelled 2024-05-31