Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W5XAJ callsign genealogy
Currently held by SULLIVAN 688, JOHN A
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 W5XAJ's current licensee, walking backwards.
- SULLIVAN Jr, JOHN ATXgranted 2026-05-19cancelled 2026-06-06
Successor callsigns
Callsigns held now by people who previously held W5XAJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5XAJ, oldest first.
- SULLIVAN 688, JOHN A TX2013-04-12 → cancelled 2025-04-15
- SULLIVAN Jr, JOHN A TX2026-06-06 active