Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB4JA callsign genealogy
Currently held by ALEXANDER JR, JOHN T
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 AB4JA's current licensee, walking backwards.
- ALEXANDER JR, JOHN TALgranted 2000-03-16cancelled 2000-12-19
Successor callsigns
Callsigns held now by people who previously held AB4JA.
No current licensee on record previously held this callsign.