Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4XOR callsign genealogy
Currently held by McAllister, Christopher L
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 K4XOR's current licensee, walking backwards.
- COFFEE, ADAM NNCgranted 2018-11-21cancelled 2018-12-11
Successor callsigns
Callsigns held now by people who previously held K4XOR.
- McAllister, Christopher LFLgranted 2016-07-12
All historical holders
Every license row we've seen with the callsign K4XOR, oldest first.
- McAllister, Christopher L FL2006-02-17 → cancelled 2007-07-19
- COFFEE, ADAM N NC2018-12-11 active