Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4ABJ callsign genealogy
Currently held by SYKES, WILLIAM E
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 N4ABJ's current licensee, walking backwards.
- Boesch, Jeffrey AALgranted 2024-01-19cancelled 2024-03-15
Successor callsigns
Callsigns held now by people who previously held N4ABJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4ABJ, oldest first.
- SYKES, WILLIAM E GA1994-08-18 → cancelled 2000-06-09
- Berry Jr, Arthur FL2006-09-08 → cancelled 2018-09-11
- Boesch, Jeffrey A AL2024-03-15 active