Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4XJ callsign genealogy
Currently held by DAY, JOHN W
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 W4XJ's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W4XJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4XJ, oldest first.
- DAY, JOHN W TN1994-06-16 → cancelled 2003-05-02
- Sly, Randolph W MO2025-03-11 active